The First Born: The Beginning of Strength and Excellency of Power

Reuben, you are my firstborn, my might, and the beginning of my strength, excelling in honor, excelling in power.

Instead, he must acknowledge the firstborn, the son of his unloved wife, by giving him a double portion of all that he has. For that son is the firstfruits of his father’s strength; the right of the firstborn belongs to him.