Leviticus 22:31-33

Lev 22:31 “So you will keep my commandments and do them: I am Yahveh.
Lev 22:32 And you will not profane my holy name, that I may be sanctified among the people of Israel. I am Yahveh who sanctifies you,
Lev 22:33 who brought you out of the land of Egypt to be your God: I am Yahveh.”

mutual sanctification

The LORD uses the same verb to describe his act of delivering Israel from the defilement of the surrounding nations, and the exclusive loyalty that he expects from them. He is sanctifying the Israelites, and expects them to sanctify him alone as their God. He expects their works to flow from his act of grace. So, the whole salvation experience can be described by analogy of the Israelite community in the desert, awaiting the promised land.

LORD, we set you apart as our exclusive God and Father. Teach us to walk in your ways, and so set us apart as your children.