Judges 17:13

Then said Micah, Now know I that the Lord will do me good, seeing I have a Levite to my priest. It was a peculiar blindness which caused Micah to look for blessings to Jehovah against whom he was sinning with his image worship. The mere fact that the man belonged to the tribe of Levi and was really under obligation to serve at the altar of Jehovah only could never change the fact of the mortal sin which was being committed in his house day by day, for the Levite himself did wrong in permitting himself to be hired. When men who have been called to be preachers of the Gospel become chaplains in antichristian societies, in which the honor of the Savior is set aside, they are committing the same sin as the Levite of Micah.