The word(s) "if" appears 1307 time(s) in 1079 verse(s) in Quran in Muhammad Pickthal translation.

(131) It is not (the purpose) of Allah to leave you in your present state till He shall separate the wicked from the good. And it is not (the purpose of) Allah to let you know the Unseen. But Allah chooseth of His messengers whom He will, (to receive knowledge thereof). So believe in Allah and His messengers. if ye believe and ward off (evil), yours will be a vast reward.

(132) (The same are) those who say: Lo! Allah hath charged us that we believe not in any messenger until he bring us an offering which fire (from heaven) shall devour. Say (unto them, O Muhammad): Messengers came unto you before me with miracles, and with that (very miracle) which ye describe. Why then did ye slay them? (Answer that) if ye are truthful!

(133) And if they deny thee, even so did they deny messengers who were before thee, who came with miracles and with the Psalms and with the Scripture giving light.

(134) Every soul will taste of death. And ye will be paid on the Day of Resurrection only that which ye have fairly earned. Whoso is removed from the Fire and is made to enter paradise, he indeed is triumphant. The life of this world is but comfort of illusion.

(135) Assuredly ye will be tried in your property and in your persons, and ye will hear much wrong from those who were given the Scripture before you, and from the idolaters. But if ye persevere and ward off (evil), then that is of the steadfast heart of things.

(136) Lo! In the creation of the heavens and the earth and (in) the difference of night and day are tokens (of His Sovereignty) for men of understanding,

(137) But those who keep their duty to their Lord, for them are Gardens underneath which rivers flow, wherein they will be safe for ever. A gift of welcome from their Lord. That which Allah hath in store is better for the righteous.

(138) And lo! of the People of the Scripture there are some who believe in Allah and that which is revealed unto you and that which was revealed unto them, humbling themselves before Allah. They purchase not a trifling gain at the price of the revelations of Allah. Verily their reward is with their Lord. Lo! Allah is swift to take account.

(139) And if ye fear that ye will not deal fairly by the orphans, marry of the women, who seem good to you, two or three or four; and if ye fear that ye cannot do justice (to so many) then one (only) or (the captives) that your right hands possess. Thus it is more likely that ye will not do injustice.

(140) And give unto the women (whom ye marry) free gift of their marriage portions; but if they of their own accord remit unto you a part thereof, then ye are welcome to absorb it (in your wealth).