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, Ge 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.

19. the angel of God—that is, the pillar of cloud [see on [18]Ex 13:21]. The slow and silent movement of that majestic column through the air, and occupying a position behind them must have excited the astonishment of the Israelites (Isa 58:8). It was an effectual barrier between them and their pursuers, not only protecting them, but concealing their movements. Thus, the same cloud produced light (a symbol of favor) to the people of God, and darkness (a symbol of wrath) to their enemies (compare 2Co 2:16).