A. Yusuf Ali:Translation:
Even if the wrong-doers had all that there is on earth,
and as much more, 4315 (in vain) would they offer it
for ransom from the pain of the Penalty on the Day of
Judgment: but something will confront them from
Allah, which they could never have counted
upon! 4316

Muhammad Asad:Translation:
But if those who are bent on evildoing possessed all that is on earth, and twice as much, 51 they would surely offer it as ransom from the awful suffering [that will befall them] on the Day of Resurrection: 52 for, something with which they had not reckoned before will [by then] have been made obvious to them by God; 53
4315 Cf. 13:18 . Those who reject Allah's Message must realise that the time will come when they will wish they had sacrificed everything in the cause of Truth and Righteousness. It will be too late then. Why not examine the matter seriously now and accept Allah's Grace and Light?
4316 This something will be beyond anything they can conceive of in this life. Just as the righteous will then attain a bliss which no human imagination can conceive of now, so the unrighteous will be in a misery of which they can form no conception now. See next note.