Then which of the favours of your Lord will you deny? (13: Sura e Rehman)

It was narrated that in the days that Musa - alayhis salam - wandered with Bani Israael in the desert a grizzly drought befell them. Together, they all raised their hands towards the heavens praying for the blessed rain. Then, to the astonishment of Musa - alayhis salam - and all those watching, the few clouds that scattered the sky vanished, the heat scorched down, and the drought intensified.

It was revealed to Musa that there was a sinner amongst Bani Israaeel that had disobeyed Allah for more than 40 years of his life. “Let him separate himself from the congregation,” Allah told Musa. “Only then shall I shower you all with rain.” Musa - alayhis salam - called out to the throngs of humanity, “There is a person amongst us who has disobeyed Allah for 40 years. Let him separate himself from the congregation and only then shall we be rescued from the drought.” That man, waited, looking left and right, hoping that someone else would step forward…but no one did. Sweat poured from his brow and he knew he was the one. If he stayed amongst the congregation all would die of thirst; yet, if he stepped forward he would be humiliated for all eternity. He raised his hands with sincerity he had never known before, with humility he had never tasted, tears poured on both cheeks, “O Allah, have mercy on me! O Allah, hide my sins! O Allah, forgive me!” As Musa - alayhis salam - and Bani Israaeel awaited for the sinner to step forward, the clouds hugged the sky and the rain poured. Musa - alayhis salam - asked Allah ta'aala, “O Allah, you blessed us with rain even though that sinner did not come forward.”And Allah ta'aala replied, “O Musa, it is for the repentance of that very person that I blessed all of Bani Israael with water.” Musa, wanting to know who was this blessed man, asked, “Show him to me O Allah!” Allah ta'aala replied, “O Musa, I hid his sins for 40 years. Do you think that after his repentance I shall expose him?”
Allah always gives His best to those who leave the choice with Him