That thy foot may be dipped in the blood of thine enemies - Margin, "red." A more literal rendering would be, "That thou mayest crush - thy foot in blood - the tongue of thy dogs from the enemies, from him." The idea of "dipping" the foot in blood is not in the passage directly; but the leading thought is that of "crushing" the enemy. It is then "added" that the foot would be in blood. So of the tongue of the dogs. The "meaning" is, that the tongues of dogs would be employed in licking up the blood of the enemies, though that is not "expressed" in so many words. The sense of the whole is, that the foes of the people would be slain.

That thy foot may be dipped in the blood - God will make such a slaughter among his enemies, the Amorites, that thou shalt walk over their dead bodies; and beasts of prey shall feed upon them.

That thy foot may be dipped in the blood of [thine] enemies, [and] the tongue of thy dogs (r) in the same.
(r) That is, in the blood of that great slaughter, where dogs will lap blood.

That thy foot may be dipped in the blood of thine enemies,.... This verse is in connection with Psalm 68:21, with Psalm 68:23 being to be read in a parenthesis: the sense is, that the Messiah would so wound the head and hairy scalp of his people's enemies, and there should be such a large effusion of blood, that their feet should be dipped therein, Revelation 14:20; See Gill on Psalm 58:10;
and the tongue of thy dogs in the same; who should lick it up, as the dogs licked the blood of Jezebel, 1-Kings 21:19; and so such a carnage will be made of antichrist and his followers, that the fowls of the heavens will be called upon to eat the flesh of kings, captains, and mighty ones, Revelation 19:17.

That, &c. - And as it was at the Red Sea, and at Bashan before, so yet again thine enemies shall be slain in such numbers, that thou mayst wade in their blood, and thy dogs lick it up in the field.