Numbers 8:6
"Take the Levites from among the children of Israel, and cleanse them.
Exodus 19:15
And he said unto the people, "Be ready against the third day, and see that ye come not at your wives."
Isaiah 52:11
Away, away, get you out from thence and touch no unclean thing. Go out from among such. And be clean ye that bear the vessel of the LORD.
2 Corinthians 7:1
Seeing that we have such promises, dearly beloved, let us cleanse ourselves from all filthiness of the flesh and spirit, and grow up to full holiness in the fear of God.
James 4:8
Draw nigh to God, and he will draw nigh to you. Cleanse your hands ye sinners, and purge your hearts ye wavering minded.