No church in the NT was only gentile believers. if you read the scriptures carefully you will find that when they went to a new town, FIRST they went to the synagogue meaning they went to the Jews.
Easy-to-Read Version
The Good News Comes to Antioch
19 The believers were scattered by the persecution[a] that began when Stephen was killed. Some of them went as far as Phoenicia, Cyprus, and Antioch. They told the Good News in these places, but only to Jews. 20 Some of these believers were men from Cyprus and Cyrene. When these men came to Antioch, they began speaking to people who were not Jews. They told them the Good News about the Lord Jesus. 21 The Lord was helping these men, and a large number of people believed and decided to follow the Lord.
22 When the church in Jerusalem heard about this, they sent Barnabas to Antioch. 23-24 Barnabas was a good man, full of the Holy Spirit and faith. When he went to Antioch and saw how God had blessed the believers there, he was very happy. He encouraged them all, saying, “Always be faithful to the Lord. Serve him with all your heart.” Many more people became followers of the Lord.
25 Then Barnabas went to the city of Tarsus to look for Saul. 26 When he found him, he brought him to Antioch. They stayed there a whole year. Every time the church came together, Barnabas and Saul met with them and taught many people. It was in Antioch that the followers of the Lord Jesus were called “Christ-followers” for the first time.
27 About that same time some prophets went from Jerusalem to Antioch. 28 One of them, named Agabus, stood up and spoke with the help of the Spirit. He said, “A very bad time is coming to the whole world. There will be no food for people to eat.” (This time of famine happened when Claudius was emperor.) 29 The Lord’s followers decided that they would each send as much as they could to help their brothers and sisters who lived in Judea. 30 They gathered the money and gave it to Barnabas and Saul, who took it to the elders in Judea.
More Trouble for the Believers
12 During this same time, King Herod began to do harm to some of those who were part of the church. 2 He ordered James, the brother of John, to be killed with a sword. 3 Herod saw that many of the Jews liked this, so he decided to arrest Peter too. This happened during the Festival of Unleavened Bread. 4 He arrested Peter and put him in jail, where he was guarded by a group of 16 soldiers. Herod planned to bring Peter before the people, but he wanted to wait until after the Passover festival. 5 So Peter was kept in jail, but the church was constantly praying to God for him.
Peter Is Led Out of the Jail
6 One night, Peter, bound with two chains, was sleeping between two of the soldiers. More soldiers were guarding the door of the jail. Herod was planning to bring Peter out before the people the next day. 7 Suddenly an angel of the Lord was standing there, and the room was filled with light. The angel tapped Peter on the side and woke him up. The angel said, “Hurry, get up!” The chains fell off Peter’s hands. 8 The angel said, “Get dressed and put on your sandals.” Peter did as he was told. Then the angel said, “Put on your coat and follow me.”
9 So the angel went out and Peter followed. He did not know if the angel was really doing this. He thought he might be seeing a vision. 10 Peter and the angel went past the first guard and the second guard. Then they came to the iron gate that separated them from the city. The gate opened for them by itself. After they went through the gate and walked about a block, the angel suddenly left.
11 Peter realized then what had happened. He thought, “Now I know that the Lord really sent his angel to me. He rescued me from Herod and from everything those Jews thought would happen to me.”
12 When Peter realized this, he went to the home of Mary, the mother of John, who was also called Mark. Many people were gathered there and were praying. 13 Peter knocked on the outside door. A servant girl named Rhoda came to answer it. 14 She recognized Peter’s voice, and she was very happy. She even forgot to open the door. She ran inside and told the group, “Peter is at the door!” 15 The believers said to her, “You are crazy!” But she continued to say that it was true. So they said, “It must be Peter’s angel.”
16 But Peter continued to knock. When the believers opened the door, they saw him. They were amazed. 17 Peter made a sign with his hand to tell them to be quiet. He explained to them how the Lord led him out of the jail. He said, “Tell James and the other brothers what happened.” Then he left and went to another place.
18 The next day the soldiers were very upset. They wondered what happened to Peter. 19 Herod looked everywhere for him but could not find him. So he questioned the guards and then ordered that they be killed.
The Death of Herod Agrippa
Later, Herod moved from Judea. He went to the city of Caesarea and stayed there a while. 20 Herod was very angry with the people from the cities of Tyre and Sidon. But these cities needed food from his country, so a group of them came to ask him for peace. They were able to get Blastus, the king’s personal servant, on their side.
21 Herod decided on a day to meet with them. On that day he was wearing a beautiful royal robe. He sat on his throne and made a speech to the people. 22 The people shouted, “This is the voice of a god, not a man!” 23 Herod did not give the glory to God. So an angel of the Lord caused him to get sick. He was eaten by worms inside him, and he died.
24 The message of God was spreading, reaching more and more people.
25 After Barnabas and Saul finished their work in Jerusalem, they returned to Antioch, taking John Mark with them.