Genesis 49:3-4, 8

¶“Reuben, you are my firstborn; My might, the beginning of my strength and vigor, Preeminent in dignity and preeminent in power [that should have been your birthright]. “But unstable and reckless and boiling over like water [in sinful lust], you shall not excel or have the preeminence [of the firstborn], Because you went up to your father’s bed [with Bilhah]; You defiled it—he went up to my couch. [Gen 35:22]

¶“Judah, you are the one whom your brothers shall praise; Your hand will be on the neck of your enemies; Your father’s sons shall bow down to you.