Leviticus 7:20
But if anyone who is unclean eats meat from the peace offering that belongs to the LORD, that person must be cut off from his people.

Leviticus 7:21
If one touches anything unclean, whether human uncleanness, an unclean animal, or any unclean, detestable thing, and then eats any of the meat of the peace offering that belongs to the LORD, that person must be cut off from his people."

Leviticus 15:5
Anyone who touches his bed must wash his clothes and bathe with water, and he will be unclean until evening.

1 Samuel 16:5
"In peace," he replied. "I have come to sacrifice to the LORD. Consecrate yourselves and come with me to the sacrifice." Then he consecrated Jesse and his sons and invited them to the sacrifice.

1 Samuel 20:27
But on the day after the New Moon, the second day, David's place was still empty, and Saul asked his son Jonathan, "Why hasn't the son of Jesse come to the meal either yesterday or today?"