Ah, sword of the LORD! How long till you are quiet? Put yourself into your scabbard; rest and be still!
Here Jeremiah turns to address the sword of God; and it is a happy apostrophe. It is very striking and forcible, when the Prophet at one time addresses the land of the Philistines, and at another, the sword of God; and he had no other object but to confirm his prophecy, of which otherwise, the Jews might have doubted. He then says, Ho! sword of Jehovah!
As the Egyptians had often proved false friends, so the Philistines had always been sworn enemies, to the Israel of God, and the more dangerous and vexatious for their being such near neighbours to them. They were considerably humbled in David's time, but, it seems they had got head again and were a considerable people till Nebuchadnezzar cut them off with their neighbours, which is the event here foretold.
Commenting on Jeremiah 47:1-7
O thou sword of the Lord,.... For though it was the sword of the Chaldeans, yet being appointed and sent by the Lord, and having a commission from him, and being ordered and directed in his providence to do his will, it is called his sword: how long will it be ere thou be quiet?