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

(741) And verily we sent Noah (as Our messenger) unto his folk, and he continued with them for a thousand years save fifty years; and the flood engulfed them, for they were wrong-doers.

(742) And Abraham! (Remember) when he said unto his folk: Serve Allah, and keep your duty unto Him; that is better for you if ye did but know.

(743) But if ye deny, then nations have denied before you. The messenger is only to convey (the message) plainly.

(744) He said: Ye have chosen only idols instead of Allah. The love between you is only in the life of the world. Then on the Day of Resurrection ye will deny each other and curse each other, and your abode will be the Fire, and ye will have no helpers.

(745) For come ye not in unto males, and cut ye not the road (for travellers), and commit ye not abomination in your meetings? But the answer of his folk was only that they said: Bring Allah's doom upon us if thou art a truthteller!

(746) He said: Lo! Lot is there. They said: We are best aware of who is there. We are to deliver him and his household, all save his wife, who is of those who stay behind.

(747) And when Our messengers came unto Lot, he was troubled upon their account, for he could not protect them; but they said: Fear not, nor grieve! Lo! we are to deliver thee and thy household, (all) save thy wife, who is of those who stay behind.

(748) And (the tribes of) A'ad and Thamud! (Their fate) is manifest unto you from their (ruined and deserted) dwellings. Satan made their deeds seem fair unto them and so debarred them from the Way, though they were keen observers.

(749) The likeness of those who choose other patrons than Allah is as the likeness of the spider when she taketh unto herself a house, and lo! the frailest of all houses is the spider's house, if they but knew.

(750) They bid thee hasten on the doom (of Allah). And if a term had not been appointed, the doom would assuredly have come unto them (ere now). And verily it will come upon them suddenly when they perceive not.