The word(s) "sin" appears 521 time(s) in 480 verse(s) in Quran in Mohsin Khan translation.

(181) Allah increases the provision for whom He wills, and straitens (it for whom He wills), and they rejoice in the life of the world, whereas the life of this world as compared with the Hereafter is but a brief passing enjoyment.

(182) And (remember) when your Lord proclaimed: "If you give thanks (by accepting Faith and worshipping none but Allah), I will give you more (of My Blessings); but if you are thankless (i.e. disbelievers), verily My punishment is indeed severe."

(183) Their Messengers said: "What! Can there be a doubt about Allah, the Creator of the heavens and the earth? He calls you (to Monotheism and to be obedient to Allah) that He may forgive you of your sins and give you respite for a term appointed." They said: "You are no more than human beings like us! You wish to turn us away from what our fathers used to worship. Then bring us a clear authority (i.e. a clear proof of what you say)."

(184) Have you not seen those who have changed the Blessings of Allah into disbelief (by denying Prophet Muhammad صلى الله عليه و سلم and his Message of Islam), and caused their people to dwell in the house of destruction?

(185) And He gave you of all that you asked for, and if you count the Blessings of Allah, never will you be able to count them. Verily, man is indeed an extreme wrong-doer, a disbeliever (an extreme ingrate who denies Allah's Blessings by disbelief, and by worshipping others besides Allah, and by disobeying Allah and His Prophet Muhammad صلى الله عليه و سلم).

(186) "It (Hell) has seven gates, for each of those gates is a (special) class (of sinners) assigned.

(187) They (the angels) said: "Do not be afraid! We give you glad tidings of a boy (son) possessing much knowledge and wisdom."

(188) [Ibrahim (Abraham) again] said: "What then is the business on which you have come, O Messengers?"

(189) They (the angels) said: "We have been sent to a people who are Mujrimun (criminals, disbelievers, polytheists, sinners).

(190) And We made known this decree to him, that the root of those (sinners) was to be cut off in the early morning.