'Converts' in the Bible

When the meeting of the synagogue broke up, many Jews and devout converts to Judaism followed Paul and Barnabas, who kept talking to them and urging them to continue in the grace of God.

Now I urge you, brothers for you know that the members of the family of Stephanas were the first converts in Achaia, and that they have devoted themselves to serving the saints

For there are many people who are rebellious, especially those who are converts from Judaism. They speak utter nonsense and deceive people.