Psalm 78:44 → Exodus 7

Psalm 78:44 compresses the first plague into a single poetic line built from Exodus 7's own vocabulary: הָפַךְ (haphak, "he turned"), יְאֹר (ye'or, the Nile — pluralized here to "their rivers"), דָּם (dam, "blood"), and the resulting inability to drink (שָׁתָה, shathah, under negation). Exodus 7:17 announces it, 7:20 executes it, and 7:21 records the very outcome the psalm keeps: "the Egyptians could not drink its water." The plural rivers and the added נֹזֵל (nozel, "streams") gather up Exodus 7:19, where the blood spreads through Egypt's streams, canals, ponds, and reservoirs — the psalm preserves the reach of the plague and drops the narrative around it. That compression is purposeful. Psalm 78 is instruction, not chronicle: "that we have heard and known and our fathers have relayed to us. We will not hide them from their children" (78:3-4). The Nile was Egypt's life and Egypt's god, and it was turned to death at a word — a thing worth telling a son. But the psalm's indictment is that Israel watched all of it and still "did not believe God or rely on His salvation" (78:22), and that "despite His wonderful works, they did not believe" (78:32). Overwhelming evidence did not produce trust. The psalm's own answer is not another plague but a shepherd: it ends with David, who "shepherded them with integrity of heart" (78:72). Judgment can empty a river; only a shepherd can turn a heart. That is the work Christ takes up as the Shepherd David only sketched (John 10:11), and the reason the cup He finally hands His people is not blood poured out against them but His own blood poured out for them.