As an offering of firstfruits you may bring them to the LORD, but they shall not be offered on the altar for a pleasing aroma.
Here, I. Leaven and honey are forbidden to be put in any of their meat-offerings: No leaven, nor any honey, in any offering made by fire, Lev 2:11. 1. The leaven was forbidden in remembrance of the unleavened bread they ate when they came out of Egypt. So much despatch was required in the offerings they made that it was not convenient they should stay for the leavening of them.
Commenting on Leviticus 2:11-16
As for the oblation of the firstfruits, ye shall offer them unto the Lord,.... Or "in" or "with the oblation", as some render it; that is, along with the oblation of the firstfruits leaven and honey might be offered: the Arabic version is very express, "but for a sacrifice of firstfruits ye" shall offer both to God; as they might be, as before observed; so...
the oblation of the first-fruits--voluntary offerings made by individuals out of their increase, and leaven and honey might be used with these (Lev 23:17; Num 15:20). Though presented at the altar, they were not consumed, but assigned by God for the use of the priests.