Genesis 17:14

Gen. 17:14. "That soul shall be cut off from his people." This and other parallel texts in the Law of Moses are not necessarily to be understood of death. It is very agreeable to the use of such expressions elsewhere, that he that is excommunicated, deprived, either by the judgment of ecclesiastical judges or by the immediate judgment of God, of all union or communion with the congregation or Church of God's people, should be said to be cut off from His people and cut off from the congregation of the Lord. Joshua says to the Gibeonites, Joshua 9:23… In the original it is "There shall not be cut off from you a bondsman." (The word "cut off" in the original being the same as in the other case) - i.e., no one of you shall be separated from the rest of your company, so as not to partake with him or have communion with him in servitude. So God says, Numbers 4:18 - i.e., let them not be separated from them and from a participation in their privileges. Here, again, the word in the original is the same: as it also is Zechariah 14:2, where it is implied that not only those that are dead, but those who are separated from the inhabitants and benefits of the city by captivity, are cut off from the city. So divorcement in scripture is "cutting off," the word being from the same root in the original (Deuteronomy 24:1; Deuteronomy 24:3; Isaiah 50:1). However, God's depriving His people of church privileges, or of the privileges of His visible people, is compared to this very thing.

Gen. 18