In Exodus 15:1-12, it is written:
Then Moses and the children of Israel sang this song to the Lord, and they spoke, saying, I will sing to the Lord, for very exalted is He; a horse and its rider He cast into the sea.
The Eternal's strength and His vengeance were my salvation; this is my God, and I will make Him a habitation, the God of my father, and I will ascribe to Him exaltation.
The Lord is a Master of war; the Lord is His Name.
Pharaoh's chariots and his army He cast into the sea, and the elite of his officers sank in the Red Sea.
The depths covered them; they descended into the depths like a stone.
Your right hand, O Lord, is most powerful; Your right hand, O Lord, crushes the foe.
And with Your great pride You tear down those who rise up against You; You send forth Your burning wrath; it devours them like straw.
And with the breath of Your nostrils the waters were heaped up; the running water stood erect like a wall; the depths congealed in the heart of the sea.
[Because] the enemy said, I will pursue, I will overtake, I will share the booty; my desire will be filled from them; I will draw my sword, my hand will impoverish them.
You blew with Your wind, the sea covered them; they sank like lead in the powerful waters.
Who is like You among the powerful, O Lord? Who is like You, powerful in the holy place? Too awesome for praises, performing wonders!
You inclined Your right hand; the earth swallowed them up.
In verse 12, why is the word "earth" introduced to replace "water"?