Believe them the first time!

“When [Saul] arrived in Jerusalem, he tried to join the disciples, but they were all afraid of him, since they did not believe he was a disciple. Barnabas, however, took him and brought him to the apostles and explained to them how Saul had seen the Lord on the road and that the Lord had talked to him, and how in Damascus he had spoken boldly in the name of Jesus. Sorry, the disciples said, but when someone shows you who they are, believe them the first time!” — Acts 9:26–27