The Jailer, just like Potiphar, was a very observant man with keen perception. He noticed Joseph was different. Soon he put Joseph completely in charge of the whole operation. He could trust Joseph. He walked to the beat of a different Drummer.
Christians ought to be trustworthy.
He trusted because he saw the God-Factor. Joseph was connected with God and success was automatic. The warden paid no attention to anything under Joseph's care, because the LORD was with Joseph and gave him success in whatever he did. Some time later the Cup-Bearer and the Baker of the king of Egypt offended their master. They did something wrong.