'Themselves' in the Bible

All of the priests and Levites were ceremonially clean, because they had purified themselves. They killed the Passover lamb for themselves, their priestly brothers, and all the exiles.

The Israelites who had returned from exile ate it, together with all who had separated themselves from the uncleanness of the Gentiles of the land in order to worship Yahweh, the God of Israel.

After these things had been done, the leaders approached me and said: “The people of Israel, the priests, and the Levites have not separated themselves from the surrounding peoples whose detestable practices are like those of the Canaanites, Hittites, Perizzites, Jebusites, Ammonites, Moabites, Egyptians, and Amorites.

Indeed, the Israelite men have taken some of their daughters as wives for themselves and their sons, so that the holy seed has become mixed with the surrounding peoples. The leaders and officials have taken the lead in this unfaithfulness!”