Psalm 78:43-45

New Revised Standard Version Catholic Edition

⁴³ when he displayed his signs in Egypt,
    and his miracles in the fields of Zoan.
⁴⁴ He turned their rivers to blood,
    so that they could not drink of their streams.
⁴⁵ He sent among them swarms of flies, which devoured them,
    and frogs, which destroyed them.