In Psalm 74, the psalmist recalls the Exodus, but phrases it in terms of the creation week. God divides waters (day 2), provides food and separates land from water (day 3), establishes sun, moon, stars, and season (day 4), and cares for birds, beasts, and mankind (days 5 and 6). When God delivered Israel from slavery in Egypt through the waters of the red sea, it was like He had made a new creation. When God rescued us from death through the waters of baptism, He made us a new creation (2 Cor 5:17). In the Exodus God crushed the head of Pharaoh, the Leviathan, but now He has crushed the true Leviathan, the devil, by His death and resurrection.
God my King is from of old, working salvation in the midst of the earth. Thou didst divide the sea by thy might; thou didst break the heads of the dragons on the waters. Thou didst crush the heads of Leviathan, thou didst give him as food for the creatures of the wilderness. Thou didst cleave open springs and brooks; thou didst dry up ever-flowing streams. Thine is the day, thine also the night; thou hast established the luminaries and the sun. Thou hast fixed all the bounds of the earth; thou hast made summer and winter. Remember this, O Lord, how the enemy scoffs, and an impious people reviles thy name. Do not deliver the soul of thy dove to the wild beasts; do not forget the life of thy poor for ever.
Christ is risen from the dead,
By death trampling down on death,
And to those in the tomb,
He has granted life!