The promise of the land to Abraham's descendants finds its first fulfillment when two and a half tribes of Israel are assigned land by Joshua east of the Jordan River. The tribe of Manasseh receives the half portion. Caleb receives land around Hebron based on a promise God had given him. Judah, the fourth son of Jacob then receives precedence in the allotment of land over his three older brothers because they had committed acts that caused them to lose their inheritance as firstborn (See Genesis 49:1-12). A double portion of land went to Judah's younger brother Joseph who had two adopted Egyptian sons, Ephraim and Manasseh. In Genesis 48:5-6 Jacob declares Ephraim and Manasseh to be his children, thus each received one share of land west of the Jordan. Interestingly, Manasseh did receive land on both sides of the Jordan, a total allotment of land in size second only to Judah. His land east of the Jordan was received conditional that his clan, Machir, agreed to fight in the conquest of the land west of the Jordan.