except a reminder to the worlds." This means: whoever believes in it will be reminded by it of the Hereafter.
﴿إِلَّا ذكر للْعَالمين﴾ يَعْنِي: مَنْ آمَنَ بِهِ يَذْكُرُونَ بِهِ الْآخِرَة