Word by Word Analysis

ثُمَّ إِنَّ رَبَّكَ لِلَّذِينَ عَمِلُوا۟ ٱلسُّوٓءَ بِجَهَـٰلَةٍ ثُمَّ تَابُوا۟ مِنۢ بَعْدِ ذَٰلِكَ وَأَصْلَحُوٓا۟ إِنَّ رَبَّكَ مِنۢ بَعْدِهَا لَغَفُورٌ رَّحِيمٌ 119

Then, indeed your Lord, to those who have done wrong out of ignorance and then repent after that and correct themselves - indeed, your Lord, thereafter, is Forgiving and Merciful.