Matthew Poole and continuators on Jeremiah 51:44

44 And I will punish Bel in Babylon , and I will bring forth out of his mouth that which he hath swallowed up , and the nations shall not flow together any more unto him , yea the wall of Babylon shall fall .

Bel was the principal Babylonian Idol, of which see what is noted chap. 50.2.

All the Vessels of the Temple 2 Chron. 36.7. and what ever gifts the Babylonians had presented to him.

It was the custom of other Nations to send presents to the Gods of those Nations whom they were in subjection to, or whom they would appease; whence it is that we read the Philistines when they had the Ark would not send it home without a present, 1 Sam. 6.11. God by his Prophet foretelleth that the time should come when the Nations should come no more to Babylon, either to pay an homage to their chief Idol, nor yet to bring offerings unto him.

And the City of Babylon should be also ruined.