The Act of Conversion
Acts 19:4
...John's baptism was a baptism of repentance. He told the people to believe in the one coming after him, that is, in Jesus. Mark 1:14-15 After John was put in prison, Jesus went into Galilee, proclaiming the good news of God. "The time has come," he said. "The kingdom of God is near. Repent and believe the good news."
Acts 11:20-21
Some of them, however, men from Cyprus and Cyrene, went to Antioch and began to speak to Greeks also, telling them the good news about the Lord Jesus. The Lord's hand was with them, and a great number of people believed and turned to the Lord.
Acts 20:20-21
[Paul said to them,] “You know that I have not hesitated to preach anything that would be helpful to you but have taught you publicly and from house to house. I have declared to both Jews and Greeks that they must turn to God in repentance and have faith in our Lord Jesus.”