But if they turn away, then indeed your duty is only conveying the Message.
Adhikr submits the true way of the whole of mankind from Adam to the Last Day as explained in verses 3: 19-20. As explained in verse 2: 256 there is no compulsion in Islam; the True way of life is separated from the crooked way of life by revealing Adhikr. So the duty of Messengers and believers is only to convey Adhikr-the Message-to entire mankind as explained in verse 13: 40. It is told in verse 25: 58 that the Three-Time-Knower is enough to acquaint the sins of His servants. And it is told in verse 17: 17 that the Lord is enough to acquaint and observe the sins of His servants.
The soulless and worthless Arabic Quran reading Fujjar by hiding and rejecting Adhikr are making Islam the crooked way of life among the other people of Messenger Muhammed. Thus they are hurrying for the Doomsday. See explanation 2: 119; 5: 67 and 10: 108-109.