At the beginning of His ministry, Jesus did things that people knew about, but lacked. It was genuine authority... so much so, that the evil spirits recognized it and reacted. Please take note that the people who were astounded and amazed were religious folk, the Jewish religious leaders, including the Scribes who meticulously copied the Scriptures. They had no revelation of them! This is the state of most of the church today.
It says that they were amazed at His authority.
What is Authority? The Greek word used is Exousia, meaning authority, jurisdiction, liberty, power, right, rightly, ability, privilege, force, capacity, competency, freedom, mastery and a token of control.

Please remember that He was ministering as an ordinary human being and never as divinity. The first Adam had this authority and gave it away in the garden, so the legal title deeds to planet earth and the atmospheric heavens were given to satan. When he tempted Jesus, he said All this power will I give thee, and the glory of them: for that is delivered unto me; and to whomsoever I will I give it. Luke 4:6. The word used for Power here is Exousia. Jesus never contradicted him. Satan is the god of this world according to 2 Corinthians 4:4. The Earth is the Lord's (see 1 Corinthians 10:26-28) and this refers to the literal planet, but the control of it, or the legal title deeds of it are temporarily stolen and in the devil's possession. He controls the world system. He motivates the mind and will of men and women who are not in covenant relationship with God simply by legal right. Do not mistake what I am saying. He is a very powerful spirit being, but his authority has been wrested away form him by Jesus and delegated to the Church.
The Second Adam came to show us that it can still be done, but God's way.

This authority can be delegated and we shall see this in due course but look for a moment at Luke 10:1-16. Here Jesus despatched Other 70 also. This means that  there were at least 82 disciples then. There were more. John 6:66 tells us that any of His disciples quit, so there were more than 82. On the Day of pentecost,120 disciples were in the upper room, including Mary His mother, so she obeyed His instructions and also received the Holy Spirit... speaking on other tongues with the rest! See Acts 1:1-14.

Now when Jesus sent the 70 out, He never mentioned a word about evil spirits, but they came back with glowing reports.
And the seventy returned again with joy, saying, Lord, even the devils are subject unto us through thy name. 

And he said unto them, I beheld Satan as lightning fall from heaven. Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you. Notwithstanding in this rejoice not, that the spirits are subject unto you; but rather rejoice, because your names are written in heaven. Luke 10:17-20 (emphasis mine).

All that they knew and did what what He said. If we do likewise than the results will be different to what we have  now.
Notice the emphasis on what He told them.
The word used for Subject is Hypotassō and it relates to being under subjection to them, to be subordinate, to be obedient and to submit to them.
The word He used for Power is the same word Exousia. So they had the same capabilities and authority He did and all this was before Calvary! Now that He won the victory at Calvary, He has delegated this same power and authority to the Church... to those whose names are written in Heaven! Is yours?

The word used here is Dynamis from which we derive our words dynamo, dynamic, dynamite and the like. 
It talks about the ability, might, deeds, power and strength of God. It is an explosive force that complements the authority in a believer, given to the believer as fulfilment of divine promise.
Jesus had already told them about delegated authority and now speaks about something completely different, the enabling force that backs up the delegated authority with explosive energy. They are two completely separate and individual things and we deal with them elsewhere.

Gd is restoring the Power AND the Authority back to the Church.

The English word Church is derived from the word Kuriakon which means Belonging to the Lord. It is a word which is never applied to the Church in the New Testament period except for two occasions, referring to The Lord’s Supper and to the Lord’s Day (1 Corinthians 11:20; Revelation 1:10). In post-apostolic times the Greeks used The term Kuriakon was introduced by the Greeks in the post apostolic era to speak about a church building.  The only words in the New Testament used to designate a building as a place of worship are temple and synagogue. Acts 5:42; James 2:2.

The Church is an assembly of people!

The Greek word Ekklesia is more accurately used to describe what we call Church and it is not a building, but an assembly of people.
The term is derived from two Greek words, Ek meaning out from, and Kaleo which means to call. Those called out had reference to the legislative body of citizens of the Greek republic called from their communities to serve the country, particularly to a session of the State or Assembly… Ekklesia.
See Matthew 16:18; 18:17; Acts 2:47; 9:31; 13:1; 14:23; 15:22; 16:5; 20:17,28; Romans 16:4, 5; 1 Corinthians 12:28; Ephesians 5:23–29; Colossians 1:18 and Revelation 1:4, 11.
In other words, the Church is a group or assembly of people who are Called Out Ones. We could thus say that the group of people who were called out in Ephesus was the church at a place called Ephesus. See Acts 19:39. In like manner Israel was called out of Egypt and assembled in the wilderness as a Church under this definition. See Acts 7:38 and Hebrews 12:23.

If we are Called Out Ones... what are we called out of or from and unto what or whom are we called? As we shall see, we are called out from teh world system known as Egypt and called unto God as separate to Him.

The word Ekklesia thus means an assembly of people. When Jesus spoke about the Church He would build, He used the word Ekklesia. This was derived from two sources.. the Jewish use of the word in the Greek Old Testament, (Septuagint) referred to the congregation of Israel and the Greek use of the word to refer to any assembly of people. Such an assembly of people could be a constituted body or an unorganized mob. An example of the Jewish use is found in Acts 7:37-38- This is that Moses, … that was in the church in the wilderness with the angel which spake to him in the mount Sinai, and with our fathers: who received the lively oracles to give unto us.

The Jewish use of the word ekklesia, usually translates the Hebrew word Quahal which was the Old Testament word for the congregation of Israel in the wilderness. An example of the Greek use of Ekklesia is found in Acts chapter nineteen: Some therefore cried one thing, and some another: for the assembly [ekklesia] was confused; and the more part knew not wherefore they were come together [mob] (Acts 19:32); and But if ye enquire anything concerning other matters, it shall be determined in a lawful assembly [official legislative body] (Acts 19:39).

When Jesus said, And on this rock I will build My Church in Matthew 16:18, He placed he emphasis not on the word Church , but on MY Church. She is therefore His Church... His unique body of believers of which He is the Head.

The Church of which Jesus spoke cannot be founded on a man who most likely never went to Rome. Peter's missionary journeys according to scripture took him from Jerusalem to Samaria, Lydda, Joppa, Caesaria and Antioch, but no mention is made about him going to Rome. The Church is founded on the rock Christ Jesus and based on revealed knowledge given Peter by God. We call this revelation knowledge.

When Jesus said thou art Peter, He used the word Petros, which means a little rock. He was not going to build His church on a little rock that was unstable at the time this revelation of who Jesus was had been given him. Not long afterwards, Peter denied Jesus three times. Jesus had to rebuke him for thinking with natural reasoning when He spoke about Calvary.
But he turned, and said unto Peter, Get thee behind me, Satan: thou art an offence unto me: for thou savourest not the things that be of God, but those that be of men. Matthew 16:23.
Jesus never promised to build His church upon any man, including Peter, but upon Himself.
Peter is careful to tell us this in 1 Peter 2:4-9.

Jesus, not Peter was the rock upon which Christ built the church. Jesus is the true foundation. 1 Corinthians 3:11.
Matthew 16:16-18 teaches that Christ is building His church upon the true confession of His sonship. The Church is based on the foundation which is Jesus Christ Himself.
Thou art Peter (Petros, little rock, or a piece of rock), and upon this rock (Petra, big rock or mass of rock, referring to Himself and the many little stones that would confess His sonship, as did Peter on this occasion) I will build my church; and the gates of hell shall not prevail against it.
Peter is merely one of many living stones, as he himself testifies, teaching that Jesus is the Living Corner Stone in 1 Peter 2:1-8; 2:19-22.

The Church started with one congregation at Jerusalem.

According to Matthew 28:18-20 and Acts 1:8 the church was to spread into Judea, Samaria, and unto the uttermost parts of the earth. Man-made beliefs state that Peter went to Rome to found the Church and establish an infallible line of Apostolic succession, but this is not so. There is no reference to Peter's teaching apostolic succession or personal infallibility, or that he conferred such upon anyone to follow him. He claimed only equality with others. His whole spirit and teaching was contrary to those claims made for him. 1 Peter  5:1-3.

Jesus gave no such authority to Peter or to any successor of Peter. Other apostles with Peter constituted the church foundation. Ephesians 2:19-22; Revelation  21:14.
James had equal authority with Peter at Jerusalem. Galatians 2:1-10; Acts 15:13-19.
Peter was not infallible, being rebuked by Paul. Galatians 2:1-11.
Peter calls himself only a fellow-elder. 1 Peter  5:1-9.
The delegated power to bind and to loose was for all, not for Peter only. Mark 16:15-20; Luke 24:49; John 20:22-23; 14:12; Acts 1:8; 2:43.

There is no historical or biblical evidence of a continuous succession since Peter. The earliest tradition we have of Peter being in Rome and starting a church there is the latter part of the second century, or about 100 years after Peter died. There is no proof that Peter died at Rome, or even visited Rome.

It is clear in Scripture that the church at Rome was not started by Peter and that no apostle had ever been to Rome before Paul's visit.
The gospel was in all likelihood taken to Rome by Jews who were present at Pentecost (Acts 2:10) and became converted. These converts may have remained in Jerusalem long enough to get sufficient training in Christian doctrine to start a church at Rome. The church was established there at an early period, for it became well known throughout the Roman Empire by the time Paul visited there. Romans1:8. The church had been in communication with Paul, not Peter, wanting him to come there for many years. Romans 15:23.

It was Paul's policy not to build upon another man's foundation. Romans15:20-21; 2 Corinthians 10:14-16. He would have violated this stance if Peter were the resident bishop. In fact, the church in Rome was in poor condition. Romans 1:10-15; 15:18-32; 16:1-27 illustrate this.

Peter is not recognized anywhere in the bible as the universal head of the church with headquarters at Rome. On the contrary, Jerusalem was the headquarters of Christendom until it was destroyed in 70 A.D. Acts 15; Galatians 2. Peter had no authority over the Gentile churches (2 Corinthians 11:28) and he had no more authority over the Jewish churches than did James. Galatians 2:9.
Peter ministered mainly to Jewish believers, but the Church at Rome was mainly Gentile. Galatians 2:8; Romans 1:13; 10:1-3; 11:13-14.

Paul never mentioned Peter as the resident, universal head of the church based in Rome, or as even being there in any capacity. This fact is more striking when Paul mentions many less noted workers of God as being there. Romans16; 1 Corinthians 16:15-24; Colossians 4:7-18. In fact, Peter was in Judea ministering to the Jews during the time that he is supposed to have been in Rome. Acts 2:14-29; 3:16:7; 9:32-11:18; 12:1-19; Galatians 1:18-2:18. Even after the gospel spread over the Roman Empire, the apostles were considered the leaders of the church at Jerusalem and more or less leaders of the whole Christian church. In the Gentile church-world Paul was considered the outstanding leader in the Gentile churches. Galatians 2:1-10.

In the early days of the Church, no denominations existed. People believed in Jesus.
They were Followers of Christ, which is really what the term Christian means.... Christ ones. We could say that a Christian is someone who has Christ Inside. We tend to relegate the disciples to bible days, but we do not realise that we are still living in bible days. The book of Acts is more accurately called the Acts of the Holy Spirit amongst the disciples and by following Jesus and adhering to His teachings, we are in fact His disciples. The book of Acts is therefore still being enacted so to speak... by us!

To become a Christian by the definition of Jesus... one HAD to be Born again. See John 3:16.
Being born of the Spirit or born from above is a definitive moment in time when one who is capable of making rational decisions to follow Christ are made. Infants cannot do this. The bible is very clear that one must believe and repent. There is no other way.

When were were first called Christians

It was under Paul's ministry that believers were first called Christians and this was at Antioch. Acts 11:26.
Going to church is not God's intention. Do not misunderstand me. God wants us there and He wants to come to visit also. Revelation 3:20 says that He wants to come in and I often wonder how welcome He is in certain places. Give the Holy Spirit room to move folks and the King of Glory will come in. Jesus had certain things to say to the seven churches in the Book of Revelation and they relate to the church of our day just as much as when He first spoke.
To the messenger (pastor) of the church in Laodicea, write: The amen, the witness who is faithful and true, the source of God's creation, says: I know what you have done, that you are neither cold nor hot. I wish you were cold or hot. But since you are lukewarm and not hot or cold, I'm going to spit you out of my mouth. You say, ‘I'm rich. I'm wealthy. I don't need anything.' Yet, you do not realize that you are miserable, pitiful, poor, blind, and naked. I advise you: Buy gold purified in fire from me so that you may be rich. Buy white clothes from me. Wear them so that you may keep your shameful, naked body from showing. Buy ointment to put on your eyes so that you may see. I correct and discipline everyone I love. Take this seriously, and change the way you think and act. Look, I'm standing at the door and knocking. If anyone listens to my voice and opens the door, I'll come in and we'll eat together (intimate fellowship with Jesus). I will allow everyone who wins the victory to sit with me on my throne, as I have won the victory and have sat down with my Father on his throne. Let the person who has ears listen to what the Spirit says to the churches.” Revelation 3:14-22 (emphasis mine).

There is a higher purpose for just going to church for an hour or so to feel good.
I am a pastor and certainly advocate regular attendance. There are many good reasons. Scriptures tell us not to stop going to a good bible believing, word of faith preaching church. So, friends, we can now—without hesitation—walk right up to God, into "the Holy Place." Jesus has cleared the way by the blood of his sacrifice, acting as our priest before God. The "curtain" into God's presence is his body. So let's do it—full of belief, confident that we're presentable inside and out. Let's keep a firm grip on the promises that keep us going. He always keeps his word. Let's see how inventive we can be in encouraging love and helping out, not avoiding worshiping together as some do but spurring each other on, especially as we see the big Day approaching. Hebrews 10:19-25.

The Church is designed to be a vibrant, living body of believers, gathering together for corporate worship, for fellowship, for meeting the needs of others in real and practical terms, as a place where the believers can be built up, encouraged, protected, loved and nurtured and to be trained to go out into a lost and dying world to proclaim the god news of the Kingdom of God.
Sunday service should be a place to gain strength and be motivated.
The mission field starts at the front door on the way out, because the shepherd's job it to feed the sheep so that they can bear the lambs. Unless I am sadly mistaken, sheep give birth to sheep, but that is another story.