Ya-Sin - 36:11

إِنَّمَا تُنذِرُ مَنِ اتَّبَعَ الذِّكْرَ وَخَشِيَ الرَّحْمَن بِالْغَيْبِ فَبَشِّرْهُ بِمَغْفِرَةٍ وَأَجْرٍ كَرِيمٍ
[36:11]
You can only warn him who follows the reminder and fears the Beneficent Allah in secret; so announce to him forgiveness and an honorable reward.
Thou canst but admonish such a one as follows the Message and fears the (Lord) Most Gracious, unseen: give such a one, therefore, good tidings, of Forgiveness and a Reward most generous.
Thou warnest only him who followeth the Reminder and feareth the Beneficent in secret. To him bear tidings of forgiveness and a rich reward.