Albert Barnes Commentary Habakkuk 3:15

"Thou didst tread the sea with thy horses, The heap of mighty waters." — Habakkuk 3:15 (ASV)

You walked through the sea with Your horses - God Himself is pictured as leading them on the way, Himself at the head of their multitude, having, as Asaph said of old, His path in the sea. So Isaiah (Isaiah 63:13), who led them in the depths; and Zechariah (Zechariah 10:11), And he shall pass through the sea. God was literally there; for (Acts 17:28), in Him we live and move and have our being. He who “is wholly everywhere but the whole of Him nowhere” manifested His Presence there. Such anthropomorphisms have a truth, which people’s favorite abstractions have not.

Through the heap - of great waters, as of old (Exodus 15:8; Psalms 78:13): the waters stood as a heap, and He made the waters to stand as a heap. The very hindrances to deliverance are in God’s hands a way for His ends. The waves of the Red Sea rose in heaps, yet this was but a readier way for the salvation of His people and the destruction of their enemies. Dionysius: “God ever prepares a way for His elect in this present evil world, and leads them along the narrow way which leads to life.”