Matthew Poole and continuators on Jeremiah 13:4

4 Take the girdle that thou hast got, which is upon thy loyns, and arise, go to Euphrates, and hide it there in an hole of the rock .

God having commanded the Prophet to procure such a girdle as was before mentioned, and to tye it upon his loyns, he a second time comes to him and commandeth him to take this girdle and carry it to Euphrates. This was one of the four great Rivers that the River out of the Garden of Eden divided it self into, Gen. 2.10, 14. It was the border of the promised land, Gen. 15.18. Deut. 1.7.11.24. 1 Chron. 5.9. Reubens Lot was bounded by it. The Prophet was commanded to hide his girdle, in the hole of a Rock in that River. But why there? were there not other places nearer, where the Prophet might have hid it? It is judged by some, that this command was also to signifie unto them, that they should be carried out of their own borders into Captivity, or rather that they had corrupted, and were become rotten by doing after the fashions and manners of the Heathens, who lived on the other side of Euphrates alwayes, but having (an hundred years before this) captivated the ten tribes, lived also on this side of it.