﴿ ٱدْعُ إِلَىٰ سَبِيلِ رَبِّكَ بِٱلْحِكْمَةِ وَٱلْمَوْعِظَةِ ٱلْحَسَنَةِ ۖ وَجَٰدِلْهُم بِٱلَّتِى هِىَ أَحْسَنُ ۚ إِنَّ رَبَّكَ هُوَ أَعْلَمُ بِمَن ضَلَّ عَن سَبِيلِهِۦ ۖ وَهُوَ أَعْلَمُ بِٱلْمُهْتَدِينَ ﴾

“CALL THOU (all mankind] unto thy Sustainer's path with wisdom and goodly exhortation, and argue with them in the most kindly manner- for, behold, thy Sustainer knows best as to who strays from His path, and best knows He as to who are the right-guided.”

(Call unto the way of thy Lord) the religion of your Lord (with wisdom) with the Qur'an (and fair exhortation) exhort them with the exhortations of the Qur'an, (and reason with them in the better way) with the Qur'an; it is also said that this means: by means of �there is no god but Allah�. (Lo! thy Lord is best aware of him who strayeth from His way) from His religion, (and He is Best Aware of those who go aright) to His religion.