Translation of the verse 53 from Surah Al-‘Ankabut : Number of verses 69 - - page 403 - Part 21.
And they ask you to hasten on the torment (for them), and had it not been for a term appointed, the torment would certainly have come to them. And surely, it will come upon them suddenly while they perceive not!
And they urge you to hasten the punishment. And if not for [the decree of] a specified term, punishment would have reached them. But it will surely come to them suddenly while they perceive not.
(29:53) They ask you to hasten in bringing chastisement *93 upon them. Had there not been an appointed term for it, the chastisement would have already visited them; in fact it will come down upon them all of a sudden (at its appointed time) while they will not be aware of it.
*93) That is,"They are challenging you again and again that If you are a true messenger and they are really denying the Truth, then you should not delay the torment with which you threaten them. "