He divided the sea, and caused them to pass through - The reader is requested to consult the notes on the parallel passages marked in the margin on this verse and Psalm 78:14-17, etc., where all these miracles are largely explained.
He divided the sea - The Red Sea. Exodus 14:21-22.
And he made the waters to stand as an heap - The word rendered “heap” means anything piled up, or a mound; and the idea is, that the waters were piled up on each side of them as a “mound.” See the notes at Psalm 33:7. Compare Joshua 3:13, Joshua 3:16; Exodus 15:8.
In all their experiences, God was trying to teach them obedience to their heavenly Guide, and faith in His power to deliver them. Their deliverance from affliction in Egypt, and their passage through the Red Sea, revealed to them His power to save. When they rebelled against Him, and went contrary to His will, God punished them. When they persisted in their rebellion, and were determined to have their own way, God gave them that for which they asked, and in this way showed them that, that which He withheld from them, He withheld for their own good. Every judgment that came as a result of their murmurings was a lesson to that vast multitude, that sorrow and suffering are always the result of transgression of the laws of God. TDG 254.4
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