The Family Of Imran - 3:82
Whoever turns back after that has gone astray.
Related:
The Coalition/33:7
We took a covenant (promise) from the Prophets: from you, Noah, Abraham, Moses and Jesus son of Mary. We had taken from them a firm promise.
The Coalition/33:8
So We will ask the righteous about their righteousness. And for the disbelievers a painful torment has been prepared.