You find Him vast in forgiveness:
Allah The Almighty says:
“Indeed, your Lord is vast in forgiveness.” [Surah An-Najm: 32]
He The Exalted, moreover, forgives all sins.
“Say, ‘O My servants who have transgressed against themselves [by sinning], do not despair of the mercy of Allah. Indeed, Allah forgives all sins. Indeed, it is He who is the Forgiving, the Merciful.’” [Surah Az-Zumar: 53]
Allah The Almighty stretches out His hand to forgive the sinners.
It was narrated that the Prophet, peace and blessings be upon him, said: “Allah The Almighty spreads out His hand at night to accept the repentance of the one who sinned during the day, and He spreads out His hand by day to accept the repentance of the one who sinned during the night, (and that will continue) until the sun rises from the west.”
He The Exalted also rejoices over the repentance of His slaves.
It was narrated that the Prophet, peace and blessings be upon him, said: “Allah rejoices more over the repentance of His slave than any one of you who finds his camel after having lost it in a desolate land.” 
He The Exalted loves those who are constantly repentant.
“Indeed, Allah loves those who are constantly repentant and loves those who purify themselves.” [Surah Al-Baqarah: 222]
He The Exalted replaces the evil deeds with good ones.
“Except for those who repent, believe and do righteous work. For them Allah will replace their evil deeds with good. And ever is Allah Forgiving and Merciful.” [Surah Al-Furqaan: 70]
He The Exalted conceals in the worldly life and forgives in the Hereafter.
It was narrated that the Prophet, peace and blessings be upon him, said: “One of you will come close to his Lord till He will shelter him in His screen and say: Did you commit such-and-such sin? He will say, ‘Yes.’ Then Allah will say: Did you commit such and such sin? He will say, ‘Yes.’ So Allah will make him confess (all his sins) and He will say, ‘I screened them (your sins) for you in the world, and today I forgive them for you.” 
 Reported by Muslim.
 Reported by Al-Bukhari and Muslim.
 Reported by Al-Bukhari in the chapter of Al-Adab (Good Manners) (10/486) and the chapter of At-Tawheed (monotheism) (10/475).
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