Verily We have revealed the Book to thee in Truth, for (instructing) mankind. He, then, that receives guidance benefits his own soul: but he that strays injures his own soul. Nor art thou set over them to dispose of their affairs. Az-Zumar 39:41 ⧉
Tafsir:
In every age, man has worshipped beings other than God, but nobody has had the courage to say that their deities created the heavens and the earth, or that the real causes of comfort or distress were in their power. It is very strange that, in spite of this uncertainty, people are not ready to leave their false gods. When all the arguments and pleadings of a preacher prove ineffective in influencing his people, the only alternative left for him is to tell them to do whatever they like and to warn them that when the Day of Final Judgement arrives, it will be made clear who is on the right path and who is on the wrong one. This is an expression of certainty on the basis of arguments, and is always the final word of a missionary.