The word(s) "sure" appears 262 time(s) in 243 verse(s) in Quran in Muhammad Pickthal translation.

(171) surely pure religion is for Allah only. And those who choose protecting friends beside Him (say): We worship them only that they may bring us near unto Allah. Lo! Allah will judge between them concerning that wherein they differ. Lo! Allah guideth not him who is a liar, an ingrate.

(172) And when some hurt toucheth man, he crieth unto his Lord, turning unto Him (repentant). Then, when He granteth him a boon from Him he forgetteth that for which he cried unto Him before, and setteth up rivals to Allah that he may beguile (men) from his way. Say (O Muhammad, unto such an one): Take pleasure in thy disbelief a while. Lo! thou art of the owners of the Fire.

(173) Assuredly that whereunto ye call me hath no claim in the world or in the Hereafter, and our return will be unto Allah, and the prodigals will be owners of the Fire.

(174) Assuredly the creation of the heavens and the earth is greater than the creation of mankind; but most of mankind know not.

(175) Lo! the Hour is surely coming, there is no doubt thereof; yet most of mankind believe not.

(176) He placed therein firm hills rising above it, and blessed it and measured therein its sustenance in four Days, alike for (all) who ask;

(177) When their messengers came unto them from before them and behind them, saying: Worship none but Allah! they said: If our Lord had willed, He surely would have sent down angels (unto us), so lo! we are disbelievers in that wherewith ye have been sent.

(178) And if We had appointed it a Lecture in a foreign tongue they would assuredly have said: If only its verses were expounded (so that we might understand)? What! A foreign tongue and an Arab? - Say unto them (O Muhammad): For those who believe it is a guidance and a healing; and as for those who disbelieve, there is a deafness in their ears, and it is blindness for them. Such are called to from afar.

(179) And verily, if We cause him to taste mercy after some hurt that hath touched him, he will say: This is my own; and I deem not that the Hour will ever rise, and if I am brought back to my Lord, I surely shall be better off with Him - But We verily shall tell those who disbelieve (all) that they did, and We verily shall make them taste hard punishment.

(180) And they were not divided until after the knowledge came unto them, through rivalry among themselves; and had it not been for a Word that had already gone forth from thy Lord for an appointed term, it surely had been judged between them. And those who were made to inherit the Scripture after them are verily in hopeless doubt concerning it.