Isaiah 27:1; Isaiah 51:9

Isaiah 27:1

1 In that day, the LORD will punish with his sword— his fierce, great and powerful sword— Leviathan the gliding serpent, Leviathan the coiling serpent; he will slay the monster of the sea.

Isaiah 51:9

9 Awake, awake, arm of the LORD, clothe yourself with strength! Awake, as in days gone by, as in generations of old. Was it not you who cut Rahab to pieces, who pierced that monster through?