The word(s) "lecture" appears 11 time(s) in 11 verse(s) in Quran in Muhammad Pickthal translation.

(1) And when Our clear revelations are recited unto them, they who look not for the meeting with Us say: Bring a lecture other than this, or change it. Say (O Muhammad): It is not for me to change it of my accord. I only follow that which is inspired in me. Lo! if I disobey my Lord I fear the retribution of an awful Day.

(2) And thou (Muhammad) art not occupied with any business and thou recitest not a lecture from this (Scripture), and ye (mankind) perform no act, but We are Witness of you when ye are engaged therein. And not an atom's weight in the earth or in the sky escapeth your Lord, nor what is less than that or greater than that, but it is (written) in a clear Book.

(3) Lo! We have revealed it, a lecture in Arabic, that ye may understand.

(4) Had it been possible for a lecture to cause the mountains to move, or the earth to be torn asunder, or the dead to speak, (this Qur'an would have done so). Nay, but Allah's is the whole command. Do not those who believe know that, had Allah willed, He could have guided all mankind? As for those who disbelieve, disaster ceaseth not to strike them because of what they do, or it dwelleth near their home until the threat of Allah come to pass. Lo! Allah faileth not to keep the tryst.

(5) Thus we have revealed it as a lecture in Arabic, and have displayed therein certain threats, that peradventure they may keep from evil or that it may cause them to take heed.

(6) And We have not taught him (Muhammad) poetry, nor is it meet for him. This is naught else than a Reminder and a lecture making plain,

(7) A lecture in Arabic, containing no crookedness, that haply they may ward off (evil).

(8) A Scripture whereof the verses are expounded, a lecture in Arabic for people who have knowledge,

(9) And if We had appointed it a lecture in a foreign tongue they would assuredly have said: If only its verses were expounded (so that we might understand)? What! A foreign tongue and an Arab? - Say unto them (O Muhammad): For those who believe it is a guidance and a healing; and as for those who disbelieve, there is a deafness in their ears, and it is blindness for them. Such are called to from afar.

(10) And thus We have inspired in thee a lecture in Arabic, that thou mayst warn the mother-town and those around it, and mayst warn of a day of assembling whereof there is no doubt. A host will be in the Garden, and a host of them in the Flame.