And he Either, 1st, Moab, who, being plunged into a sea of troubles, shall endeavour to swim out of it, but to no purpose; or, 2d, The Lord, (who is designed by this pronoun he, both in the latter clause of this verse, and in the following verse,) whose power they shall be no more able to resist than the waters can resist a man that swims, who, with great facility, divides them hither and thither. The former sense is adopted by Bishop Lowth, who says, “I cannot conceive that the stretching out the hands of a swimmer can be any illustration of the action of God stretching out his hands over Moab to destroy it.” The latter, however, is preferred by, most interpreters, as connecting best with the following clause. And they consider the comparison as implying, that God should extend his powerful hands on every side, to the utmost limits of Moab, to bring down his enemies, as a swimmer stretches out his hands to beat down with them the opposing waters.
Related Commentaries of Isaiah 25:11
Isaiah 25:11-12
11 And he shall spread forth his hands in the midst of them, as he that swimmeth spreadeth forth his hands to swim: and he shall bring down their pride together with the spoils of their hands.
12 And the fortress of the high fort of thy walls shall he bring down, lay low, and bring to the ground, even to the dust.