An Epochal moment occurs when an angel appears to Cornelius in Caesarea and Peter in Joppa.  God in His providence connects a Gentile committed to the God of Israel with the Chief Apostle of the growing Church.  First, Peter is given a vision that God has made all things clean, paving the way for a major shift in Peter's lifelong devotion to the cultural standards of Judaism.  

[Act 10:1-23 NASB] 1 Now [there was] a man at Caesarea named Cornelius, a centurion of what was called the Italian cohort, 2 a devout man and one who feared God with all his household, and gave many alms to the [Jewish] people and prayed to God continually. 3 About the ninth hour of the day he clearly saw in a vision an angel of God who had [just] come in and said to him, "Cornelius!" 4 And fixing his gaze on him and being much alarmed, he said, "What is it, Lord?" And he said to him, "Your prayers and alms have ascended as a memorial before God. 5 "Now dispatch [some] men to Joppa and send for a man [named] Simon, who is also called Peter; 6 he is staying with a tanner [named] Simon, whose house is by the sea." 7 When the angel who was speaking to him had left, he summoned two of his servants and a devout soldier of those who were his personal attendants, 8 and after he had explained everything to them, he sent them to Joppa. 9 On the next day, as they were on their way and approaching the city, Peter went up on the housetop about the sixth hour to pray. 10 But he became hungry and was desiring to eat; but while they were making preparations, he fell into a trance; 11 and he saw the sky opened up, and an object like a great sheet coming down, lowered by four corners to the ground, 12 and there were in it all [kinds of] four-footed animals and crawling creatures of the earth and birds of the air. 13 A voice came to him, "Get up, Peter, kill and eat!" 14 But Peter said, "By no means, Lord, for I have never eaten anything unholy and unclean." 15 Again a voice [came] to him a second time, "What God has cleansed, no [longer] consider unholy." 16 This happened three times, and immediately the object was taken up into the sky. 17 Now while Peter was greatly perplexed in mind as to what the vision which he had seen might be, behold, the men who had been sent by Cornelius, having asked directions for Simon's house, appeared at the gate; 18 and calling out, they were asking whether Simon, who was also called Peter, was staying there. 19 While Peter was reflecting on the vision, the Spirit said to him, "Behold, three men are looking for you. 20 "But get up, go downstairs and accompany them without misgivings, for I have sent them Myself." 21 Peter went down to the men and said, "Behold, I am the one you are looking for; what is the reason for which you have come?" 22 They said, "Cornelius, a centurion, a righteous and God-fearing man well spoken of by the entire nation of the Jews, was [divinely] directed by a holy angel to send for you [to come] to his house and hear a message from you." 23 So he invited them in and gave them lodging. And on the next day he got up and went away with them, and some of the brethren from Joppa accompanied him.