1 Samuel 20:26

Yet Saul did not say anything that day, for he thought, "Something has happened to him. He is not clean; surely he is not clean."

Leviticus 15:5

And anyone who touches his bed shall wash his clothes and bathe himself in water and be unclean until the evening.

Leviticus 11:24

"And by these you shall become unclean. Whoever touches their carcass shall be unclean until the evening,

Leviticus 11:27

And all that walk on their paws, among the animals that go on all fours, are unclean to you. Whoever touches their carcass shall be unclean until the evening,

Leviticus 7:20-21

but the person who eats of the flesh of the sacrifice of the LORD's peace offerings while an uncleanness is on him, that person shall be cut off from his people.

Leviticus 11:31

These are unclean to you among all that swarm. Whoever touches them when they are dead shall be unclean until the evening.

Leviticus 11:40

and whoever eats of its carcass shall wash his clothes and be unclean until the evening. And whoever carries the carcass shall wash his clothes and be unclean until the evening.

Leviticus 15:16-17

"If a man has an emission of semen, he shall bathe his whole body in water and be unclean until the evening.

Leviticus 15:19-21

"When a woman has a discharge, and the discharge in her body is blood, she shall be in her menstrual impurity for seven days, and whoever touches her shall be unclean until the evening.

Numbers 19:16

Whoever in the open field touches someone who was killed with a sword or who died naturally, or touches a human bone or a grave, shall be unclean seven days.

1 Samuel 16:5

And he said, "Peaceably; I have come to sacrifice to the LORD. Consecrate yourselves, and come with me to the sacrifice." And he consecrated Jesse and his sons and invited them to the sacrifice.

Treasury of Scripture Knowledge

Summary

Nevertheless Saul spake not any thing that day: for he thought, Something hath befallen him, he is not clean; surely he is not clean.

Bible References

He is not clean

Leviticus 7:21
And if anyone touches an unclean thing, whether human uncleanness or an unclean beast or any unclean detestable creature, and then eats some flesh from the sacrifice of the LORD's peace offerings, that person shall be cut off from his people."
Leviticus 11:24
"And by these you shall become unclean. Whoever touches their carcass shall be unclean until the evening,
Leviticus 15:5
And anyone who touches his bed shall wash his clothes and bathe himself in water and be unclean until the evening.
Numbers 19:16
Whoever in the open field touches someone who was killed with a sword or who died naturally, or touches a human bone or a grave, shall be unclean seven days.

The Holy Bible, English Standard Version® copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.