And I will punish Bel in Babylon, and I will bring forth out of his mouth that which {a} he hath swallowed: and the nations shall not flow together any more to him: even the wall of Babylon shall fall.

(a) That is, his gifts and presents which he had received as part of the spoil of other nations, and which the idolaters brought to him from all countries.

Wesley's Notes

51:44 Bel - Bel was the principal Babylonian idol. Bring forth - All the vessels of the temple, 2Chron 36:7, and whatever gifts the Babylonians had presented to him. The wall - And the city of Babylon shall be also ruined.

Jamieson-Fausset-Brown Bible Commentary

44. Bel . swallowed-in allusion to the many sacrifices to the idol which its priests pretended it swallowed at night; or rather, the precious gifts taken from other nations and offered to it (which it is said to have "swallowed"; compare "devoured," "swallowed," Jer 51:34; Jer 50:17), which it should have to disgorge (compare Jer 51:13; Jer 50:37). Of these gifts were the vessels of Jehovah's temple in Jerusalem (2Ch 36:7; Da 1:2). The restoration of these, as foretold here, is recorded in Ezr 1:7-11.

flow-as a river; fitly depicting the influx of pilgrims of all "nations" to the idol.

Matthew Henry's Concise Commentary

51:1-58 The particulars of this prophecy are dispersed and interwoven, and the same things left and returned to again. Babylon is abundant in treasures, yet neither her waters nor her wealth shall secure her. Destruction comes when they did not think of it. Wherever we are, in the greatest depths, at the greatest distances, we are to remember the Lord our God; and in the times of the greatest fears and hopes, it is most needful to remember the Lord. The feeling excited by Babylon's fall is the same with the New Testament Babylon, Re 18:9,19. The ruin of all who support idolatry, infidelity, and superstition, is needful for the revival of true godliness; and the threatening prophecies of Scripture yield comfort in this view. The great seat of antichristian tyranny, idolatry, and superstition, the persecutor of true Christians, is as certainly doomed to destruction as ancient Babylon. Then will vast multitudes mourn for sin, and seek the Lord. Then will the lost sheep of the house of Israel be brought back to the fold of the good Shepherd, and stray no more. And the exact fulfilment of these ancient prophecies encourages us to faith in all the promises and prophecies of the sacred Scriptures.