﴿ ٱلْمُلْكُ يَوْمَئِذٍ ٱلْحَقُّ لِلرَّحْمَٰنِ ۚ وَكَانَ يَوْمًا عَلَى ٱلْكَٰفِرِينَ عَسِيرًۭا ﴾

“on that Day [it will become obvious to all that] true sover­eignty belongs to the Most Gracious [alone]: hence, a Day of distress will it be for all who deny the truth,”

Please check ayah 25:29 for complete tafsir.