Moses
Exodus 23:18BSB·traditional attribution

You must not offer the blood of My sacrifices with anything leavened, nor may the fat of My feast remain until morning.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. The institution of the sabbatical year, Exo 23:10, Exo 23:11. Every seventh year the land was to rest; they must not plough nor sow it at the beginning of the year, and then they could not expect any great harvest at the end of the year: but what the earth did produce of itself should be eaten from hand to mouth, and not laid up.

Commenting on Exodus 23:10-19

John Gill Reformed Baptist @doctorgill

Behold, I send an angel before thee,.... Not a created angel, but the uncreated one, the Angel of God's presence, that was with the Israelites at Sinai, and in the wilderness; who saved, redeemed, bore, and carried them all the days of old, whom they rebelled against and tempted in the wilderness; as appears by all the characters after given of him, which by no...

Geneva Bible Notes Reformed @genevanotes

Thou shalt not offer the blood of my sacrifice with leavened bread; neither shall the fat of my sacrifice remain until the morning. (k) No leavened bread will be in your house.