Exodus 19:10וְכִבְּסוּ
Then the LORD said to Moses, “Go to the people and consecrate them today and tomorrow. They must wash their clothes
Leviticus 6:27תְּכַבֵּס
Anything that touches its flesh will become holy, and if any of the blood is spattered on a garment, you must wash it in a holy place.
Numbers 8:7וְכִבְּסוּ
This is what you must do to cleanse them: Sprinkle them with the water of purification. Have them shave their whole bodies and wash their clothes, and so purify themselves.
Psalm 51:7תְּכַבְּסֵנִי
Purify me with hyssop, and I will be clean; wash me, and I will be whiter than snow.
Isaiah 7:3כוֹבֵס
Then the LORD said to Isaiah, “Go out with your son Shear-jashub to meet Ahaz at the end of the aqueduct that feeds the upper pool, on the road to the Launderer’s Field,
Jeremiah 2:22תְּכַבְּסִי
Although you wash with lye and use an abundance of soap, the stain of your guilt is still before Me,” declares the Lord GOD.

Brown-Driver-Briggs

[כָּבַס] 51 vb. (tread), wash

Qal highway of fuller’s (= treader’s, washer’s) field

Pi.

1. wash garments (i.e. by treading)

2. wash person

Pu. be washed, of garment

Hothp. after the plague is washed out

Sources: Brown-Driver-Briggs (1906, public domain) from the Open Scriptures Hebrew Lexicon (CC BY 4.0), glosses from STEPBible TBESH (CC BY 4.0); STEPBible TAHOT (Hebrew Bible, Leningrad Codex, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.