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 33:21

33:21 He has selected the best part for himself,

for the portion of the ruler is set aside there;

he came with the leaders of the people,

he obeyed the righteous laws of the Lord

and his ordinances with Israel.

Deuteronomy 21:17

21:17 Rather, he must acknowledge the son of the less loved wife as firstborn and give him the double portion of all he has, for that son is the beginning of his father’s procreative power – to him should go the right of the firstborn.

Deuteronomy 26:10

26:10 So now, look! I have brought the first of the ground’s produce that you, Lord, have given me.” Then you must set it down before the Lord your God and worship before him.