John Calvin Commentary Ezekiel 16:40

"They shall also bring up a company against thee, and they shall stone thee with stones, and thrust thee through with their swords." — Ezekiel 16:40 (ASV)

Since what Ezekiel has until now brought forward was incredible, he now explains the manner of its accomplishment: that the Chaldeans and Assyrians would bring a large army and bury the whole of Judea with stones, and pierce it through with swords. By these figures he simply means that there would be such slaughter that the whole region would be made desolate, just as if the enemy would slay all that they met with stones and swords. Some think that he alludes to stones which were thrown by engines of war, but I doubt whether the Prophet thought of this. What I have stated is more simple: that the Jews had no cause to think themselves free from that final slaughter of which the Prophet spoke, since numerous and powerful armies would come and overwhelm them with stones, and pierce them through with swords.