The word(s) "if" appears 1620 time(s) in 1267 verse(s) in Quran in Abdullah Yusuf Ali translation.

(931) And to Solomon (We made) the Wind (obedient): Its early morning (stride) was a month's (journey), and its evening (stride) was a month's (journey); and We made a Font of molten brass to flow for him; and there were Jinns that worked in front of him, by the leave of his Lord, and if any of them turned aside from our command, We made him taste of the Penalty of the Blazing Fire.

(932) Then, when We decreed (Solomon's) death, nothing showed them his death except a little worm of the earth, which kept (slowly) gnawing away at his staff: so when he fell down, the Jinns saw plainly that if they had known the unseen, they would not have tarried in the humiliating Penalty (of their Task).

(933) Say: "Who gives you sustenance, from the heavens and the earth?" Say: "It is Allah; and certain it is that either we or ye are on right guidance or in manifest error!"

(934) They say: "When will this promise (come to pass) if ye are telling the truth?"

(935) Say: "if I am astray, I only stray to the loss of my own soul: but if I receive guidance, it is because of the inspiration of my Lord to me: it is He Who hears all things, and is (ever) near."

(936) if thou couldst but see when they will quake with terror; but then there will be no escape (for them), and they will be seized from a position (quite) near.

(937) And if they reject thee, so were messengers rejected before thee: to Allah back for decision all affairs.

(938) O men! Certainly the promise of Allah is true. Let not then this present life deceive you, nor let the Chief Deceiver deceive you about Allah.

(939) For those who reject Allah, is a terrible Penalty: but for those who believe and work righteous deeds, is Forgiveness, and a magnificent Reward.

(940) if any do seek for glory and power,- to Allah belong all glory and power. To Him mount up (all) Words of Purity: It is He Who exalts each Deed of Righteousness. Those that lay Plots of Evil,- for them is a Penalty terrible; and the plotting of such will be void (of result).