The destruction of the Egyptian army is trumpeted as one of the clearest evidences that God is a destroyer. Even in the song of Moses we are told that God is a man of war that dashes his enemies to pieces

The LORD is a man of war: the LORD is his name.  (4)  Pharaoh's chariots and his host hath he cast into the sea: his chosen captains also are drowned in the Red sea.  (5)  The depths have covered them: they sank into the bottom as a stone.  (6)  Thy right hand, O LORD, is become glorious in power: thy right hand, O LORD, hath dashed in pieces the enemy. Exodus 15:3-6 

How can God be a man of war and at the same time have a Son who is the prince of peace? Can sweet and bitter water from the same fountain? Is God life and death mixed into one? Is His character like Yin and Yang?

Moreover, brethren, I would not that ye should be ignorant, how that all our fathers were under the cloud, and all passed through the sea;  (2)  And were all baptized unto Moses in the cloud and in the sea; 1 Cor 10:1-2 

Rom 6:3  Know ye not, that so many of us as were baptized into Jesus Christ were baptized into his death? 

If the Red Sea experience was a baptism for Israel then it reveals a connection to the death and resurrection of Christ. It also gives a window into the final destruction of Satan

Behold, therefore I will bring strangers upon thee, the terrible of the nations: and they shall draw their swords against the beauty of thy wisdom, and they shall defile thy brightness.  (8)  They shall bring thee down to the pit, and thou shalt die the deaths of them that are slain in the midst of the seas. Eze 28:7-8 

Within the mystery of the cross, the mystery of the Red Sea will find its true meaning. Without it we can only see through a mirror darkly.