Leviticus 23:17

23:17 From the places where you live you must bring two loaves of bread for a wave offering; they must be made from two tenths of an ephah of fine wheat flour, baked with yeast, as first fruits to the Lord.

Numbers 15:19-21

15:19 and you eat some of the food of the land, you must offer up a raised offering to the Lord. 15:20 You must offer up a cake of the first of your finely ground flour as a raised offering; as you offer the raised offering of the threshing floor, so you must offer it up. 15:21 You must give to the Lord some of the first of your finely ground flour as a raised offering in your future generations.

Numbers 18:12-13

18:12 “All the best of the olive oil and all the best of the wine and of the wheat, the first fruits of these things that they give to the Lord, I have given to you. 18:13 And whatever first ripe fruit in their land they bring to the Lord will be yours; everyone who is ceremonially clean in your household may eat of it.

Deuteronomy 18:4

18:4 You must give them the best of your grain, new wine, and olive oil, as well as the best of your wool when you shear your flocks.

Deuteronomy 26:2

26:2 you must take the first of all the ground’s produce you harvest from the land the Lord your God is giving you, place it in a basket, and go to the place where he chooses to locate his name.