Then will l make their waters deep,.... Either the water, of Egypt literally, the waters of the Nile: no canals being cut from it, to carry the water to the several parts of the land, the land being depopulated, and no business done: or, figuratively, other nations, compared to waters for their numbers, who before had been disturbed by the Egyptians; but now they being destroyed, these would be at ease, like troubled waters, which subside, and: become deep and clear, when there is none to trouble them:and cause their, rivers to run like oil, saith the Lord God; very slowly, as if, they were mourning the unhappy condition of the land; or smoothly, clearly, undisturbed, as before.
The Targum is,"there will I cause the people to rest, and I will lead their kings quietly, saith the Lord God.'