The meat of the sacrifice of his peace offering of thanksgiving must be eaten on the day he offers it; none of it may be left until morning.
All this relates to the peace-offerings: it is the repetition and explication of what we had before, with various additions. I. The nature and intention of the peace-offerings are here more distinctly opened. They were offered either, 1. In thankfulness for some special mercy received, such as recovery from sickness, preservation in a journey, deliverance at sea, redemption out of captivity, all which are specified in Ps.
Commenting on Leviticus 7:11-34
But if the sacrifice of his offering be a vow,.... Be on account of a vow made, as, that if he was favoured with such and such benefits, or delivered out of such and such troubles and distresses, then he would offer such a sacrifice: or a voluntary offering; without any condition or obligation; what from the mere motion of his mind he freely offered...
the flesh of the sacrifice of his peace offerings . . . shall be eaten the same day that it is offered--The flesh of the sacrifices was eaten on the day of the offering or on the day following. But if any part of it remained till the third day, it was, instead of being made use of, to be burned with fire.