By great waters; rather, on great waters; i.e. on the waters of the Mediterranean (cf. Psalms 107:23; Ezekiel 27:26). The Egyptian vessels conveyed the corn intended for exportation to the ports at the mouths of the Nile, where it was transhipped aboard Phoenician craft, which carried it on the open sea to the countries needing it.
We never hear of the Egyptians disputing the trade of the Mediterranean with the Phoenicians and the Greeks, though they certainly had trading-vessels at times on the waters of the Red Sea. The seed of Sihor; i.
e. the corn of the Nile valley. "Si-her," or rather "Shihor," is the only proper name by which the Nile is designated in the Hebrew Scriptures. It means "the dark," "the turbid," and may be compared with the modern "Bahr-el-azrak," used of the Eastern or Abyssinian Nile, and with the term" Nilus" itself, if that signifies "the dark blue stream."
It occurs, as the name of the Nile, only in Joshua 13:3; 1 Chronicles 13:5; Jeremiah 2:18; and the present place. Is her revenue; i.e. "produces a portion of her annual income." And she is a man of nations (so Gesenius and Ewald).
Delitzsch and Mr. Cheyne translate, "It is the gain of the nations," referring "it' to the corn which the Tyrians exported.