Discovery BoxExodus 9:10 
Context9:10 So they took soot from a furnace and stood before Pharaoh, Moses threw it into the air, and it caused festering boils to break out on both people and animals.
Exodus 14:19
Context14:19 The angel of God, who was going before the camp of Israel, moved and went behind them, and the pillar 1 of cloud moved from before them and stood behind them.
Exodus 15:8
Context15:8 By the blast of your nostrils 2 the waters were piled up,
the flowing water stood upright like a heap, 3
and the deep waters were solidified in the heart of the sea.
1 sn B. Jacob (Exodus, 400-401) makes a good case that there may have been only one pillar, one cloud; it would have been a dark cloud behind it, but in front of it, shining the way, a pillar of fire. He compares the manifestation on Sinai, when the mountain was on fire but veiled by a dark cloud (Deut 4:11; 5:22). See also Exod 13:21; Num 14:14; Deut 1:33; Neh 9:12, 19; Josh 24:7; Pss 78:14; 105:39.
2 sn The phrase “the blast of your nostrils” is a bold anthropomorphic expression for the wind that came in and dried up the water.
3 tn The word “heap” describes the walls of water. The waters, which are naturally fluid, stood up as though they were a heap, a mound of earth. Likewise, the flowing waters deep in the ocean solidified – as though they were turned to ice (U. Cassuto, Exodus, 175).
