'Separated' in the Bible

Those of the seed of Israel separated themselves from all of the foreigners and stood and confessed their sins and the iniquities of their ancestors.

"The rest of the people, the priests, the Levites, the gatekeepers, the singers, the temple servants, and all who separated themselves from the peoples of the lands to [observe] the law of God--their wives, their sons, their daughters, and all who know and understand--

So it happened when they heard the law that they separated all of the foreign people from Israel.