26 And they shall not take of thee a stone for a corner, nor a stone for foundations; but thou shalt be desolate  for ever, saith the Lord.
26 No rock will be taken from you for a cornerstone, nor any stone for a foundation, for you will be desolate forever," declares the Lord.
26 No stone shall be taken from you for a corner and no stone for a foundation, but you shall be a perpetual waste, declares the Lord.
26 no more cornerstones cut from you, No more foundation stones quarried from you! Nothing left of you but gravel."
26 They shall not take from you a stone for a corner Nor a stone for a foundation, But you shall be desolate forever," says the Lord.
26 You will be desolate forever. Even your stones will never again be used for building. You will be completely wiped out," says the Lord .
Matthew Henry's Commentary on Jeremiah 51:26
Commentary on Jeremiah 51:1-58
(Read Jeremiah 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, Revelation 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.