Leviticus 3:2

He shall lay his hand on the head of his offering Here, as in the former case, (Leviticus 1:4,) the laying on of the offerer's hand may denote his devoting the sacrifice wholly to God. In the peace-offerings it was accompanied with solemn thanksgiving to God, and an acknowledgment of those mercies which were the occasion of it. Thus Conradus, “This laying on of hands signifies devotion and faith, with an acknowledgment of the benefits, for which we can offer nothing of our own, but only return to God what we have received; that we may understand gratitude and thanksgiving to be the greatest sacrifices.” And kill it at the door Not on the north side of the altar, where the burnt-offering was killed, as also the sin-offering, and the trespass-offering, but in the very entrance of the court where the brazen altar stood, which place was not so holy as the other; as appears both because it was more remote from the holy of holies, and because the ashes of the sacrifices were to be laid here. And the reason of this difference is not obscure, both because part of this sacrifice was to be waved by the hands of the offerer, (Leviticus 7:30,) who might not come into the court; and because this offering was not so holy as the others, which were to be eaten only by the priest, whereas part of these was eaten by the offerer.