Leviticus 11:25

11:25 and anyone who carries their carcass must wash his clothes and will be unclean until the evening.

Leviticus 13:6

13:6 The priest must then examine it again on the seventh day, and if the infection has faded and has not spread on the skin, then the priest is to pronounce the person clean. It is a scab, so he must wash his clothes and be clean.

Leviticus 15:5-8

15:5 Anyone who touches his bed must wash his clothes, bathe in water, and be unclean until evening. 15:6 The one who sits on the furniture the man with a discharge sits on must wash his clothes, bathe in water, and be unclean until evening. 15:7 The one who touches the body of the man with a discharge must wash his clothes, bathe in water, and be unclean until evening. 15:8 If the man with a discharge spits on a person who is ceremonially clean, that person must wash his clothes, bathe in water, and be unclean until evening.

Exodus 19:10

19:10 The Lord said to Moses, “Go to the people and sanctify them today and tomorrow, and make them wash their clothes

Exodus 19:14

19:14 Then Moses went down from the mountain to the people and sanctified the people, and they washed their clothes.

Numbers 8:7

8:7 And do this to them to purify them: Sprinkle water of purification on them; then have them shave all their body and wash their clothes, and so purify themselves.

Revelation 7:14

7:14 So I said to him, “My lord, you know the answer.” Then he said to me, “These are the ones who have come out of the great tribulation. They have washed their robes and made them white in the blood of the Lamb!