When man recognizes the important fact that he has spent all his previous age in adversity and away from knowing Allah the Almighty, and His blessings (both apparent and hidden) which Allah has created and put at man’s hand totally and freely; when he recognizes that these great blessings bring him happiness and lead to goodness in this life and the afterlife; when he recognizes that these blessings are the key that opens the doors of the great mercy of Allah ; when he recognizes that he has spent most of these blessings of Allah in other than the right path, and consequently he has been afflicted with different minor and major sins, and he has suffered a manifest loss and tasted the meanness of servitude to bad tendencies and lusts and has been prevailed upon by Satan from outside and inside; when he understands this well, he must repair his degrading past and previous sins that were due to his ignorance, inadvertence and disobedience, and he must repair his bad deeds, his corrupted soul, and bad morals. He must repent and return to Allah so that the sun of moral life, which is full of purity and happiness, rises in his soul.
Yes! Man, in order to receive the wide mercy of Allah, must get power from His special care, and gain Divine blessing, must follow the way of repentance and return to Allah. He must walk in the Way with the feet of his heart, the light of his mind, pure and sincere intention, determination and continuous jihad. He must walk in this way with love and knowledge to purify his heart and soul from vices, abominable deeds, transgression, debauchery, evil and bad manners. Then he will be fit to join the caravan of the pure believers, the benevolent, the lovers, the worshippers, the followers of the Way of the Truth and the neighbors of the Divine sanctum. Instead of straying into the circle of mutiny and the darkness of the Divine wrath, he will live in the station suitable for him to enjoy the Divine mercy and care.
This wakefulness and attentiveness to one’s past, coming to repent, and trying to purify one’s soul from apparent and hidden sins is considered as the key of peace with Allah the Almighty and the return to the field of His mercy. Since repentance and returning to Allah are among the greatest worship, and the states which best show the firm relationship between man and his Creator (as it has been declared by many Qur’anic verses and traditions of Ahlul Bayt (s)); therefore, a repentant person has to pay attention to these concerns in order that he can realize this great worship and to make use of its many benefits and blessings.
source : REPENTANCE THE CRADLE OF MERCY By Husayn Ansariyan