'Sanctify' in the Bible

And Joshua said to the people, "Sanctify yourselves, because tomorrow Yahweh will do wonders in your midst."

Get up, sanctify the people, and say, 'Sanctify yourselves for tomorrow. Thus says Yahweh the God of Israel: "[There are] devoted things in your midst, O Israel. You will be unable to stand before you enemies until you remove the devoted things from your midst."