What does Exodus 14:21 mean?
God instructed Moses to make this gesture over the sea (Exodus 14:16). This command came as Israel was trapped on the shoreline with an Egyptian army closing in (Exodus 14:1–2, 8–9). The Lord blocks Egyptian soldiers from making an attack (Exodus 14:19–20) to give Israel time to cross the sea. As promised, God sends a wind which drives the water back like walls (Exodus 14:22) and makes the seabed dry enough for travel. So begins the literal crossing of the Red Sea, which will permanently free Israel from Egyptian oppression (Exodus 14:13).The book of Genesis describes God parting waters (Genesis 1:9). These events are recorded to demonstrate His ultimate power over creation. Less-spectacular versions of this miracle will occur for Joshua (Joshua 3:16–17) and Elijah (2 Kings 2:8). Scripture also makes several references to the Lord's control over winds (Numbers 11:31; Isaiah 59:19), and specifically the "east wind" (Exodus 10:13; Psalm 48:7; Jonah 4:8).