19 Then the angel of God, who had been before the tents of Israel, took his place at their back; and the pillar of cloud, moving from before them, came to rest at their back: 20 And it came between the army of Egypt and the army of Israel; and there was a dark cloud between them, and they went on through the night; but the one army came no nearer to the other all the night.

Matthew Henry's Commentary on Exodus 14:19-20

Commentary on Exodus 14:15-20

(Read Exodus 14:15-20)

Moses' silent prayers of faith prevailed more with God than Israel's loud outcries of fear. The pillar of cloud and fire came behind them, where they needed a guard, and it was a wall between them and their enemies. The word and providence of God have a black and dark side toward sin and sinners, but a bright and pleasant side toward the people of the Lord. He, who divided between light and darkness, Genesis 1:4, allotted darkness to the Egyptians, and light to the Israelites. Such a difference there will be between the inheritance of the saints in light, and that utter darkness which will be the portion of hypocrites for ever.