Examples of Biblical change in the lives of New Testament men. Peter denied Jesus, he was fearful, cowardly and selfish. However, in Acts 4 and 5 we see him, a changed man. John Mark abandoned Paul and Barnabas during their 1st missionary journey. However, in 2 Tim. 4:11 Paul implies that Mark has changed and he now is profitable. How were they changed? It begins with faith. God will change you, will you believe it?