Numbers 15:19-21

Amplified Bible

¹⁹ then, when you eat the food of the land, you shall lift up an offering (heave offering) to the Lord. ²⁰ You shall lift up a cake made of the first of your [ground grain which has been made into] dough as an offering [to the Lord]; as an offering from the threshing floor, so shall you lift it up. ²¹ From the first of your dough (ground grain) you shall give to the Lord an offering throughout your generations.