And those who believe will say: Are these they who swore by Allah with the most forcible of their oaths that they were most surely with you? Their deeds shall go for nothing, so they shall become losers.

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.