Do not make excuses; you have denied indeed after you had believed; if We pardon a party of you, We will chastise (another) party because they are guilty.

O you who believe! be helpers (in the cause) of Allah, as~ Isa son of Marium said to (his) disciples: Who are my helpers in the cause of Allah? The disciples said: We are helpers (in the cause) of Allah. So a party of the children of Israel believed and another party disbelieved; then We aided those who believed against their enemy, and they became uppermost.