The Prophets
فَإِن تَوَلَّوْا۟ فَقُلْ ءَاذَنتُكُمْ عَلَىٰ سَوَآءٍ ۖ وَإِنْ أَدْرِىٓ أَقَرِيبٌ أَم بَعِيدٌ مَّا تُوعَدُونَ
But if they turn away, then say, "I have announced to [all of] you equally. And I know not whether near or far is that which you are promised.
Nearby ayahs help place verse 21:109 in sequence and meaning.
وَمَآ أَرْسَلْنَـٰكَ إِلَّا رَحْمَةً لِّلْعَـٰلَمِينَ
And We have not sent you, [O Muhammad], except as a mercy to the worlds.
قُلْ إِنَّمَا يُوحَىٰٓ إِلَىَّ أَنَّمَآ إِلَـٰهُكُمْ إِلَـٰهٌ وَٰحِدٌ ۖ فَهَلْ أَنتُم مُّسْلِمُونَ
Say, "It is only revealed to me that your god is but one God; so will you be Muslims [in submission to Him]?"
إِنَّهُۥ يَعْلَمُ ٱلْجَهْرَ مِنَ ٱلْقَوْلِ وَيَعْلَمُ مَا تَكْتُمُونَ
Indeed, He knows what is declared of speech, and He knows what you conceal.
وَإِنْ أَدْرِى لَعَلَّهُۥ فِتْنَةٌ لَّكُمْ وَمَتَـٰعٌ إِلَىٰ حِينٍ
And I know not; perhaps it is a trial for you and enjoyment for a time."