50:45
نَّحْنُ أَعْلَمُ بِمَا يَقُولُونَ ۖ وَمَآ أَنتَ عَلَيْهِم بِجَبَّارٍ ۖ فَذَكِّرْ بِٱلْقُرْءَانِ مَن يَخَافُ وَعِيدِ
We are most knowing of what they say, and you are not over them a tyrant. But remind by the Qur'an whoever fears My threat.
Qaf
نَّحْنُ أَعْلَمُ بِمَا يَقُولُونَ ۖ وَمَآ أَنتَ عَلَيْهِم بِجَبَّارٍ ۖ فَذَكِّرْ بِٱلْقُرْءَانِ مَن يَخَافُ وَعِيدِ
We are most knowing of what they say, and you are not over them a tyrant. But remind by the Qur'an whoever fears My threat.
Nearby ayahs help place verse 50:45 in sequence and meaning.
إِنَّا نَحْنُ نُحْىِۦ وَنُمِيتُ وَإِلَيْنَا ٱلْمَصِيرُ
Indeed, it is We who give life and cause death, and to Us is the destination
يَوْمَ تَشَقَّقُ ٱلْأَرْضُ عَنْهُمْ سِرَاعًا ۚ ذَٰلِكَ حَشْرٌ عَلَيْنَا يَسِيرٌ
On the Day the earth breaks away from them [and they emerge] rapidly; that is a gathering easy for Us.