'Separated' in the Bible

The {Israelites} who returned from the exile and all those who separated themselves from the uncleanness of the nations of the earth to seek Yahweh the God of Israel, ate.

After finishing these things the officials approached me saying, "The people of Israel, the priests, and the Levites have not separated from the people of the lands with their detestable things, and from the Canaanites, Hittites, Perizzites, Jebusites, Ammonites, Moabites, Egyptians, and Amorites.