Albert Barnes' Notes on the Whole Bible - Leviticus 19:2
Ye shall be holy ... - These words express the keynote to the whole book of Leviticus, being addressed to the whole nation. There does not appear to be any systematic arrangement in the laws which follow. They were intended as guards to the sanctity of the elect people, enforcing common duties by immediate appeal to the highest authority. Compare Leviticus 18:24-30 note. read more
The Pulpit Commentary - Leviticus 19:2
Ye shall be holy: for I the Lord your God am holy. The religious motive is put forward here, as in the previous chapter, as the foundation of all morality. It is God's will that we should be holy, and by being holy we. are like God, who is to be our model so far as is possible to the creature. So in the new dispensation, "Be ye therefore perfect, even as your Father which is in heaven is perfect" ( Matthew 5:48 ). "As he which hath called you is holy, so be ye holy in all manner of... read more