'Due' in the Bible

For I have taken the breast of the wave offering and the thigh of the heave offering from the Israelites, from the sacrifices of their peace offerings, and I have given them to Aaron the priest and to his sons as their perpetual portion from the Israelites.

You shall eat it in a holy place, because it is your portion and your sons’ portion, from the offerings by fire to the Lord; for so I have been commanded.

But the breast of the wave offering and the thigh of the heave offering you may eat in a clean place, you and your sons and daughters with you; for the breast and the thigh are your portion and your sons’ portion, given out of the sacrifices of the peace offerings of the Israelites.

They shall bring the thigh presented by lifting up and the breast presented by waving, along with the offerings by fire of the fat, to present as a wave offering before the Lord. This shall be yours and your sons’ with you, as your perpetual portion, just as the Lord has commanded.”

Each of you shall respect his mother and his father, and you shall keep My Sabbaths; I am the Lord your God.

The bread of the Presence shall be for Aaron and his sons, and they shall eat it in a sacred place, for it is for Aaron a most holy portion of the offerings by fire to the Lord, his portion forever.”

then I will give you rain in its season, and the land will yield her produce and the trees of the field bear their fruit.