Wash
“Washing” in the Bible represents purification - unsurprisingly! Washing dirt from the skin symbolizes using true ideas from the Lord to remove evil desires and false ideas from our minds. This is the reason that washing was such an integral part of ritual; cleaning the body to perform physical acts of worship - something with no actual spiritual value - is symbolic of repenting our evils and falsities as part of worshiping the Lord.
Numbers 14:10-12
10
But all the congregation threatened to stone them with stones. The glory of Yahweh appeared in the Tent of Meeting to all the children of Israel.
11
Yahweh said to Moses, "How long will this people despise me? and how long will they not believe in me, for all the signs which I have worked among them?
12
I will strike them with the pestilence, and disinherit them, and will make of you a nation greater and mightier than they."
