Numbers 6:8

6:8 All the days of his separation he must be holy to the Lord.

Numbers 19:19

19:19 And the clean person must sprinkle the unclean on the third day and on the seventh day; and on the seventh day he must purify him, and then he must wash his clothes, and bathe in water, and he will be clean in the evening.

Numbers 32:10

32:10 So the anger of the Lord was kindled that day, and he swore,