'Separates' in the Bible

For when anyone from the house of Israel or from the foreigners who reside in Israel separates himself from Me, setting up idols in his heart and putting a sinful stumbling block before his face, and then comes to the prophet to inquire of Me, I, Yahweh, will answer him Myself.

Also I gave them My Sabbaths to be a sign between Me and them, that they might know [without any doubt] that I am the Lord who sanctifies them (separates and sets them apart).