Leviticus 2:11-12

As for the oblation of the firstfruits - Rather, As an oblation of firstfruits. The words refer to the leaven and honey mentioned in Leviticus 2:11 which might be offered among the firstfruits and tithes (Deuteronomy 26:2, Deuteronomy 26:12; compare 2 Chronicles 31:5). Honey, being used to produce fermentation, and leaven (or, a small piece of fermented dough) were excluded because fermentation was an apt symbol of the working of corruption in the human heart.