A few brief words highlighting the forgiveness of God in Islam
Here are few of the names(attributes) of Allah (SWT) that emphasizes his forgiveness :- The Merciful الرَّحْمَنُ Ar Rahman, The Compassionate الرَّحِيمُ Ar Raheem, The Great Forgiver الْغَفَّارُ Al Ghaffar, The Forgiver الْغَفُورُ Al Ghaffur , The Granter and Accepter of repentence التَّاَّابُ At Tawwab, The Pardoner العَفُوُّ Al 'Afu
The names of Allah SWT (link) (youtube)