'Sanctify Yourselves' in the Bible

Then Joshua said to the people, “Sanctify yourselves [for His purpose], for tomorrow the Lord will do wonders (miracles) among you.”

Rise up! Consecrate the people and say, ‘Consecrate yourselves for tomorrow, for thus says the Lord, the God of Israel: “There are things under the ban among you, O Israel. You cannot stand [victorious] before your enemies until you remove the things under the ban from among you.”

and he said to them, “You are the heads of the fathers’ households of the Levites; consecrate yourselves, both you and your relatives, so that you may bring up the ark of the Lord God of Israel, to the place that I have prepared for it.

Slaughter the Passover lambs and consecrate yourselves, and prepare for your fellow countrymen to carry out (obey) the word of the Lord given by Moses.”