Ayah

ثُمَّ إِنَّ رَبَّكَ لِلَّذِينَ عَمِلُواْ ٱلسُّوٓءَ بِجَهَٰلَةٍ ثُمَّ تَابُواْ مِن بَعۡدِ ذَٰلِكَ وَأَصۡلَحُوٓاْ إِنَّ رَبَّكَ مِن بَعۡدِهَا لَغَفُورٌ رَّحِيمٌ
Translation

But verily thy Lord,- to those who do wrong in ignorance, but who thereafter repent and make amends,- thy Lord, after all this, is Oft-Forgiving, Most Merciful.<br/>
Tafsir

Then indeed your Lord - to those who did evil, associating others [with God], out of ignorance, and then repented, returned [to God's way], after that and made amends, in their actions - indeed your Lord after that, that is, [after] that ignorance, or that repentance, is Forgiving, of them, Merciful, to them.