'Sanctify' in the Bible

And Joshua said unto the people, Sanctify yourselves: for to morrow the LORD will do wonders among you.

Up, sanctify the people, and say, Sanctify yourselves against to morrow: for thus saith the LORD God of Israel, There is an accursed thing in the midst of thee, O Israel: thou canst not stand before thine enemies, until ye take away the accursed thing from among you.