The word(s) "before" appears 356 time(s) in 337 verse(s) in Quran in Mohsin Khan translation.

(211) "And if you deny, then nations before you have denied (their Messengers). And the duty of the Messenger is only to convey (the Message) plainly."

(212) Neither did you (O Muhammad صلى الله عليه وسلم) read any book before it (this Qur'an), nor did you write any book (whatsoever) with your right hand. In that case, indeed, the followers of falsehood might have doubted.

(213) Within three to nine years. The decision of the matter, before and after (these events) is only with Allah, (before the defeat of the Romans by the Persians, and after the defeat of the Persians by the Romans). And on that Day, the believers (i.e. Muslims) will rejoice (at the victory given by Allah to the Romans against the Persians) -

(214) Do they not travel in the land, and see what was the end of those before them? They were superior to them in strength, and they tilled the earth and populated it in greater numbers than these (pagans) have done: and there came to them their Messengers with clear proofs. Surely, Allah wronged them not, but they used to wrong themselves.

(215) Say (O Muhammad صلى الله عليه وسلم): "Travel in the land and see what was the end of those before (you)! Most of them were Mushrikun (polytheists, idolaters, disbelievers in the Oneness of Allah)."

(216) So set you (O Muhammad صلى الله عليه وسلم) your face (in obedience to Allah, your Lord) to the straight and right religion (Islamic Monotheism), before there comes from Allah a Day which none can avert. On that Day men shall be divided [(in two groups), a group in Paradise and a group in Hell].

(217) And indeed We did send Messengers before you (O Muhammad صلى الله عليه وسلم) to their own peoples. They came to them with clear proofs, then, We took vengeance on those who committed crimes (disbelief, setting partners in worship with Allah, sins); and (as for) the believers, it was incumbent upon Us to help (them).

(218) And verily before that (rain) - just before it was sent down upon them - they were in despair!

(219) Or say they: "He (Muhammad صلى الله عليه وسلم) has fabricated it?" Nay, it is the truth from your Lord, so that you may warn a people to whom no warner has come before you (O Muhammad صلى الله عليه وسلم): in order that they may be guided.

(220) And if you only could see when the Mujrimun (criminals, disbelievers, polytheists, sinners) shall hang their heads before their Lord (saying): "Our Lord! We have now seen and heard, so send us back (to the world), that we will do righteous good deeds. Verily! We now believe with certainty."