Deuteronomy 33:20-21

20Moses said this about the tribe of Gad: “Blessed is the one who enlarges Gad’s territory! Gad is poised there like a lion to tear off an arm or a head.

21The people of Gad took the best land for themselves; a leader’s share was assigned to them. When the leaders of the people were assembled, they carried out the Lord’s justice and obeyed his regulations for Israel.”