How did Saint Stephen become a follower of Jesus and God?

A:

Saint Stephen is only known from Acts of the Apostles, which tells us that Stephen was a man full of faith, and for that reason was chosen to be a deacon. No other record exists, and Acts does not tell us how Stephen first became involved in Christianity. However, Raymond E. Brown (An Introduction to the New Testament) casts doubt on the story of Stephen, saying that we can never even verify his existence.