Surah 14. Ibrahim, Ayah 10

Lit., "their apostles".

I.e., "until the end of your life in this world". This is, I believe, an indirect allusion to the calamities which are bound to befall, even in this world, "those who are bent on denying the truth" (see the last paragraph of 13:31 and the corresponding note [57]) - implying that they who consciously respond to the call of God, conveyed through His prophets, would be immune to this kind of suffering and would be graced with abiding spiritual happiness (cf. 13:29 ).

 It is out of Allah’s mercy that He does not hasten your punishment but delays your death until your destined time.

The Prophets (generally) clear both kinds of doubt. "You cannot doubt the existence of Allah! Behold His works! We are not speaking for ourselves or deceiving you. We speak according to the Message of inspiration from Allah.- Notice that the doubters had said to the Prophets, "Ye invite us." The Prophets say: "It is Allah Who invites you, and He does it to save you by His grace, and give you plenty of time (but not indefinite time) for penitence and amendment."

Infidelity is illogical and argues in a circle. If the Prophet speaks of Allah, the Unbeliever says, "You are only a man!" "But I speak from Allah!" "Oh well! our ancestral ways of worship are good enough for us!" "What if they are wrong?" "What authority have you for saying so?" "The highest authority, that from Allah!" And so we come back full circle! Then the wicked rely on violence, but it recoils on them, and they perish.