Genesis 49:3-5

New Revised Standard Version Catholic Edition

³ Reuben, you are my firstborn,
    my might and the first fruits of my vigor,
    excelling in rank and excelling in power.
⁴ Unstable as water, you shall no longer excel
    because you went up onto your father’s bed;
    then you defiled it—you^[a] went up onto my couch!

⁵ Simeon and Levi are brothers;
    weapons of violence are their swords.