Abraham left everything he owned to Isaac. But while he was still living, he gave gifts to the sons of his concubines and sent them away from his son Isaac to the land of the east. –Genesis 25:5-6

There was a man who had two sons. The younger one said to his father, “Father, give me my share of the estate.” So he divided his property between them. –Luke 15:11-12

What I want is not your possessions but you. After all, children should not have to save up for their parents, but parents for their children. –2 Corinthians 12:14

If a man has two wives, and he loves one but not the other, and both bear him sons but the firstborn is the son of the wife he does not love, when he wills his property to his sons, he must not give the rights of the firstborn to the son of the wife he loves in preference to his actual firstborn, the son of the wife he does not love. He must acknowledge the son of his unloved wife as the firstborn by giving him a double share of all he has. That son is the first sign of his father’s strength. The right of the firstborn belongs to him. –Deuteronomy 21:15-17