John Gills Exposition of the Bible Commentary - Psalms 137:9
Happy shall he be that taketh and dasheth thy little ones against the stones. That takes the infants from their mothers' breasts, or out of their arms, and dashes out their brains against a "rock", as the word F11 אל סלע "ad petram", V. L. Pagninus, Montanus, &c.; "ad repem", Cocceius. signifies; which, though it may seem a piece of cruelty, was but a just retaliation; the Babylonians having done the same to the Jewish children, and is foretold elsewhere should be done to... read more
Matthew Henry's Complete Commentary - Psalms 137:7-9
The pious Jews in Babylon, having afflicted themselves with the thoughts of the ruins of Jerusalem, here please themselves with the prospect of the ruin of her impenitent implacable enemies; but this not from a spirit of revenge, but from a holy zeal for the glory of God and the honour of his kingdom. I. The Edomites will certainly be reckoned with, and all others that were accessaries to the destruction of Jerusalem, that were aiding and abetting, that helped forward the affliction (Zech.... read more