The Priest permanently forfeits office if he touches any holy objects while in a state of uncleanness. Sacrifices aid the people's relationship with God. If a priest spoils a sacrifice, he sins against both people and God.
Teachers who corrupt the Gospel by teaching lawlessness are like priests who knowingly corrupt sacrifices. They defile the people's offerings of worship and service with sin even if the people are ignorant.
Leviticus 22:1-4