Surah Ash-Shuraa 42:47

ٱسْتَجِيبُوا۟ لِرَبِّكُم مِّن قَبْلِ أَن يَأْتِىَ يَوْمٌ لَّا مَرَدَّ لَهُۥ مِنَ ٱللَّهِ ۚ مَا لَكُم مِّن مَّلْجَإٍ يَوْمَئِذٍ وَمَا لَكُم مِّن نَّكِيرٍ

Respond to your Lord before a Day comes from Allāh of which there is no repelling. No refuge will you have that Day, nor for you will there be any denial.

Translation: Saheeh International

Tafsir

Answer your Lord respond to Him by affirming His Oneness and worshipping Him before there comes a day namely the Day of Resurrection for which there is no revoking from God in other words one which when He brings about He will not revoke. …

Excerpt from Tafsir al-Jalalayn, commentary on 42:47, via Quran.com. The reader has the full commentary and 9 more tafsirs.