1:1- see on Num. 20:12-14

Even though leaven was prohibited in offerings (Lev. 2:11), God was willing to accept a peace offering with leaven in it (Lev. 7:13).

Lev. 4:17 describes the priest as sprinkling the blood "before the LORD, even before the veil". This implies that the veil and the "LORD" were associated, as if the Angel, the 'LORD', was just behind the veil, i. e. in the Most Holy. See on Ps. 78:60

Aaron asks: “Would it have been well pleasing in ths sight of Yahweh?”, and then we read “And when Moses heard that, it was well-pleasing in his sight” (Lev. 10:19,20 RV). God was so manifest in Moses.

Lev. 19:17  “Thou shalt not hate thy brother in thine heart: thou shalt in any wise rebuke thy neighbour, and not suffer sin upon him”. The implication is that if we don’t have transparency with our neighbour, if we don’t rebuke them openly and specifically, then we will end up hating them. Just saying nothing about those situations calling for rebuke will only drive you to hate the person in the end.

For a freewill offering, God would accept a deformed animal (Lev. 22:23), even though this was against His preferred principle of absolute perfection in offerings. There was no atonement without the shedding of blood; and yet for the very poor, God would accept a non-blood sacrifice. This all reflected the zeal of God to accept fallen men.

26:22 see on 1 Kings 22:22