“Speak to the whole congregation of Israel and tell them: Be holy because I, the LORD your God, am holy.
Moses is ordered to deliver the summary of the laws to all the congregation of the children of Israel (Lev 19:2); not to Aaron and his sons only, but to all the people, for they were all concerned to know their duty. Even in the darker ages of the law, that religion could not be of God which boasted of ignorance as its mother.
Commenting on Leviticus 19:1-10
Speak unto all the congregation of the children of Israel,.... They could not be all spoke to together, but tribe after tribe, or family after family; or rather the heads of the tribes, and at most the heads of families were convened, and the following instructions were given, to be communicated to their respective tribes and families.
Speak unto all the congregation of the children of Israel, and say unto them, Ye shall be holy: for I the LORD your God [am] holy. (a) That is, void of all pollution, idolatry and superstition both of soul and body.