Ministers: should be Holy
Source: TTT
Exodus 28:36
You are to make a plate of pure gold and engrave on it as on a seal: HOLY TO THE LORD.
Leviticus 21:6
They must be holy to their God and not profane the name of their God. Because they present to the LORD the offerings made by fire, the food of their God, they must be holy.
Titus 1:8
Instead, he must be hospitable, a lover of good, self-controlled, upright, holy, and disciplined.