P: And they say: When will this promise (be fulfilled), if ye are truthful?
S: And they say: When will this threat come to pass if you are truthful?
021.039 Y: If only the Unbelievers knew (the time) when they will not be able to ward off the fire from their faces, nor yet from their backs, and (when) no help can reach them!
P: If those who disbelieved but knew the time when they will not be able to drive off the fire from their faces and from their backs, and they will not be helped!
S: Had those who disbelieve but known (of the time) when they shall not be able to ward off the fire from their faces nor from their backs, nor shall they be helped.
021.040 Y: Nay, it may come to them all of a sudden and confound them: no power will they have then to avert it, nor will they (then) get respite.
P: Nay, but it will come upon them unawares so that it will stupefy them, and they will be unable to repel it, neither will they be reprieved.
S: Nay, it shall come on them all of a sudden and cause them to become confounded, so they shall not have the power to avert it, nor shall they be respited.
021.041 Y: Mocked were (many) messenger before thee; But their scoffers were hemmed in by the thing that they mocked.
P: Messengers before thee, indeed, were mocked, but that whereat they mocked surrounded those who scoffed at them.