Leviticus 18:26

Ye shall therefore keep my statutes and my judgments
Before observed to them, whether of a ceremonial nature, and enjoined them according to his sovereign will and pleasure; or of a moral nature, and founded in justice and equity, and so worthy of their regard, and obligatory upon them; as well as in their own nature they recommended themselves to their regard, as being the reverse of those loathsome and abominable things before dehorted from: and shall not commit [any] of these abominations;
such as incest, adultery, idolatry, and bestiality, which are in themselves abominable things, execrable to God, and to be detested by men: [neither] any of your own nation;
that belonged to any of their own tribes, or should be born to them in the land of Canaan when they came thither, and were properly natives of it: nor any stranger that sojourneth among you;
any proselyte, and especially a proselyte of righteousness, who conformed to the Jewish religion, and had laid himself under obligation to do everything that was binding upon an Israelite.