Surah Al-An'am 6:28
بَلْ بَدَا لَهُم مَّا كَانُوا۟ يُخْفُونَ مِن قَبْلُ ۖ وَلَوْ رُدُّوا۟ لَعَادُوا۟ لِمَا نُهُوا۟ عَنْهُ وَإِنَّهُمْ لَكَـٰذِبُونَ
But what they concealed before has [now] appeared to them. And even if they were returned, they would return to that which they were forbidden; and indeed, they are liars.
Translation: Saheeh International
Tafsir
God exalted be He says Nay — here used in order to reject the desire to believe implied by the optative exclamation — that which they used to conceal to hide before by their saying By God our Lord we were never idolaters! Q. …
Excerpt from Tafsir al-Jalalayn, commentary on 6:28, via Quran.com. The reader has the full commentary and 9 more tafsirs.