If then they believe as you believe in Him, they are indeed on the right course, and if they turn back, then they are only in great opposition, so Allah will suffice you against them, and He is the Hearing, the Knowing.

And certainly Allah made a covenant with the children of Israel, and We raised up among them twelve chieftains; and Allah said: Surely I am with you; if you keep up prayer and pay the poor-rate and believe in My messengers and assist them and offer to Allah a goodly gift, I will most certainly cover your evil deeds, and I will most certainly cause you to enter into gardens beneath which rivers flow, but whoever disbelieves from among you after that, he indeed shall lose the right way.

Those who were haughty said: Surely we are deniers of what you believe in.

Firon said: Do you believe in Him before I have given you permission? Surely this is a plot which you have secretly devised in this city, that you may turn out of it its people, but you shall know:

And know that whatever thing you gain, a fifth of it is for Allah and for the Messenger and for the near of kin and the orphans and the needy and the wayfarer, if you believe in Allah and in that which We revealed to Our servant, on the day of distinction, the day on which the two parties met; and Allah has power over all things.

And when it comes to pass, will you believe in it? What! now (you believe), and already you wished to have it hastened on.

And Musa said: O my people! if you believe in Allah, then rely on Him (alone) if you submit (to Allah).