Act 10:25 And as Peter was coming in, Cornelius met him, and fell down at his feet, and worshipped [him].
Act 10:26 But Peter took him up, saying, Stand up; I myself also am a man.
Act 10:32 Send therefore to Joppa, and call hither Simon, whose surname is Peter; he is lodged in the house of [one] Simon a tanner by the sea side: who, when he cometh, shall speak unto thee.
Act 10:34 Then Peter opened [his] mouth, and said, Of a truth I perceive that God is no respecter of persons:
Act 10:44 While Peter yet spake these words, the Holy Ghost fell on all them which heard the word.
Act 10:45 And they of the circumcision which believed were astonished, as many as came with Peter, because that on the Gentiles also was poured out the gift of the Holy Ghost.
Act 10:46 For they heard them speak with tongues, and magnify God. Then answered Peter,
Act 11:2 And when Peter was come up to Jerusalem, they that were of the circumcision contended with him,
Act 11:4 But Peter rehearsed [the matter] from the beginning, and expounded [it] by order unto them, saying,
Act 11:7 And I heard a voice saying unto me, Arise, Peter; slay and eat.
Act 11:13 And he shewed us how he had seen an angel in his house, which stood and said unto him, Send men to Joppa, and call for Simon, whose surname is Peter;
Act 12:3 And because he saw it pleased the Jews, he proceeded further to take Peter also. (Then were the days of unleavened bread.)
Act 12:5 Peter therefore was kept in prison: but prayer was made without ceasing of the church unto God for him.
Act 12:6 And when Herod would have brought him forth, the same night Peter was sleeping between two soldiers, bound with two chains: and the keepers before the door kept the prison.
Act 12:7 And, behold, the angel of the Lord came upon [him], and a light shined in the prison: and he smote Peter on the side, and raised him up, saying, Arise up quickly. And his chains fell off from [his] hands.
Act 12:11 And when Peter was come to himself, he said, Now I know of a surety, that the Lord hath sent his angel, and hath delivered me out of the hand of Herod, and [from] all the expectation of the people of the Jews.
Act 12:13 And as Peter knocked at the door of the gate, a damsel came to hearken, named Rhoda.
Act 12:14 And when she knew Peter's voice, she opened not the gate for gladness, but ran in, and told how Peter stood before the gate.
Act 12:16 But Peter continued knocking: and when they had opened [the door], and saw him, they were astonished.
Act 12:18 Now as soon as it was day, there was no small stir among the soldiers, what was become of Peter.
Act 15:7 And when there had been much disputing, Peter rose up, and said unto them, Men [and] brethren, ye know how that a good while ago God made choice among us, that the Gentiles by my mouth should hear the word of the gospel, and believe.
Gal 1:18 Then after three years I went up to Jerusalem to see Peter, and abode with him fifteen days.
Gal 2:7 But contrariwise, when they saw that the gospel of the uncircumcision was committed unto me, as [the gospel] of the circumcision [was] unto Peter;
Gal 2:8 (For he that wrought effectually in Peter to the apostleship of the circumcision, the same was mighty in me toward the Gentiles:)
Gal 2:11 But when Peter was come to Antioch, I withstood him to the face, because he was to be blamed.
This is just a small overview of what Peter contended with from the circumcision. Peter mistakenly saying he was to go to the Gentiles when Paul met with him Paul got it straight. Paul wanted to go to his brethren also but he finally gave up and gave the revelation of Jesus Christ to the Gentile nations, even in Rome. Check out Paul's trip through The Acts of the Apostles also and you will see when Paul gave up.
Acts 28:25-28 And when they agreed not among themselves, they departed, after that Paul had spoken one word, Well spake the Holy Ghost by Esaias the prophet unto our fathers, Saying, Go unto this people, and say, Hearing ye shall hear, and shall not understand; and seeing ye shall see, and not perceive: For the heart of this people is waxed gross, and their ears are dull of hearing, and their eyes have they closed; lest they should see with their eyes, and hear with their ears, and understand with their heart, and should be converted, and I should heal them. Be it known therefore unto you, that the salvation of God is sent unto the Gentiles, and that they will hear it.
Then Paul only preached to those that were sent to Him, for two years.
Acts 28:30-31 And Paul dwelt two whole years in his own hired house, and received all that came in unto him, Preaching the kingdom of God, and teaching those things which concern the Lord Jesus Christ, with all confidence, no man forbidding him.
What was Peter preaching? Repent and be baptized and you will be saved. What was Paul preaching? Believe on the Lord Jesus Christ and you will be saved and The Christ that would be birthed in them.
Do you see the difference? I don't want to be contentious but Peter did not preach "Christ in you the Hope of Glory". Approaching it, Yes, but not fully understanding it or preaching it like Paul to the Gentiles.
Peter's understanding and coming close: 1 Peter 1:22-25 Seeing ye have purified your souls in obeying the truth through the Spirit unto unfeigned love of the brethren, see that ye love one another with a pure heart fervently: Being born again, not of corruptible seed, but of incorruptible, by the word of God, which liveth and abideth for ever. For all flesh is as grass, and all the glory of man as the flower of grass. The grass withereth, and the flower thereof falleth away: But the word of the Lord endureth for ever. And this is the word which by the gospel is preached unto you.
Paul: Colossians 1:27-28 To whom God would make known what is the riches of the glory of this mystery among the Gentiles; which is Christ in you, the hope of glory: Whom we preach, warning every man, and teaching every man in all wisdom; that we may present every man perfect in Christ Jesus:
Colossians 3:1-4 If ye then be risen with Christ, seek those things which are above, where Christ sitteth on the right hand of God. Set your affection on things above, not on things on the earth. For ye are dead, and your life is hid with Christ in God. When Christ, who is our life, shall appear, then shall ye also appear with him in glory.
Paul making it plain to Peter, he was wrong and needed to speak the same Gospel which later Peter said, "which some things are hard to understand."
Galatians 2:12-14 For before that certain came from James, he did eat with the Gentiles: but when they were come, he withdrew and separated himself, fearing them which were of the circumcision. And the other Jews dissembled likewise with him; insomuch that Barnabas also was carried away with their dissimulation. But when I saw that they walked not uprightly according to the truth of the gospel, I said unto Peter before them all, If thou, being a Jew, livest after the manner of Gentiles, and not as do the Jews, why compellest thou the Gentiles to live as do the Jews?
This was the bus from Jerusalem which was the circumcision, being James, John and others to spy out the freedom that the Gentiles had in Christ and Peter defected back to them for fear of them, that is why Paul confronted him bring him back to the task at hand, Preaching the final Gospel of Paul that fulfilled the word of God. Colossians 1:22-25 In the body of his flesh through death, to present you holy and unblameable and unreproveable in his sight: If ye continue in the faith grounded and settled, and be not moved away from the hope of the gospel, which ye have heard, and which was preached to every creature which is under heaven; whereof I Paul am made a minister; Who now rejoice in my sufferings for you, and fill up that which is behind of the afflictions of Christ in my flesh for his body's sake, which is the church: Whereof I am made a minister, according to the dispensation of God which is given to me for you, to fulfil the word of God;
That is "Christ in you the Hope of Glory". This is the Gospel. Amen
In Christ: Phillip