The word(s) "sure" appears 226 time(s) in 213 verse(s) in Quran in Abdullah Yusuf Ali translation.

(61) To those who do right is a goodly (reward)- Yea, more (than in measure)! No darkness nor shame shall cover their faces! they are companions of the garden; they will abide therein (for aye)!

(62) One day He will gather them together: (It will be) as if they had tarried but an hour of a day: they will recognise each other: assuredly those will be lost who denied the meeting with Allah and refused to receive true guidance.

(63) Is it not (the case) that to Allah belongeth whatever is in the heavens and on earth? Is it not (the case) that Allah's promise is assuredly true? Yet most of them understand not.

(64) When they had had their throw, Moses said: "What ye have brought is sorcery: Allah will surely make it of no effect: for Allah prospereth not the work of those who make mischief.

(65) He it is Who created the heavens and the earth in six Days - and His Throne was over the waters - that He might try you, which of you is best in conduct. But if thou wert to say to them, "Ye shall indeed be raised up after death", the Unbelievers would be sure to say, "This is nothing but obvious sorcery!"

(66) If We delay the penalty for them for a definite term, they are sure to say, "What keeps it back?" Ah! On the day it (actually) reaches them, nothing will turn it away from them, and they will be completely encircled by that which they used to mock at!

(67) But if We give him a taste of (Our) favours after adversity hath touched him, he is sure to say, "All evil has departed from me:" Behold! he falls into exultation and pride.

(68) Perchance thou mayest (feel the inclination) to give up a part of what is revealed unto thee, and thy heart feeleth straitened lest they say, "Why is not a treasure sent down unto him, or why does not an angel come down with him?" But thou art there only to warn! It is Allah that arrangeth all affairs!

(69) "I tell you not that with me are the treasures of Allah, nor do I know what is hidden, nor claim I to be an angel. Nor yet do I say, of those whom your eyes do despise that Allah will not grant them (all) that is good: Allah knoweth best what is in their souls: I should, if I did, indeed be a wrong-doer."

(70) So he said: "Embark ye on the Ark, In the name of Allah, whether it move or be at rest! For my Lord is, be sure, Oft-Forgiving, Most Merciful!"