“And you were not on the side of the Mount Tur when We called (unto Moses)...
“And you were not on the side of the Mount Tur when We called (unto Moses), but (this revelation is) a mercy from your Lord that you warn a people to whom no warner had come before you, in order that they may receive admonition.” Like other people, the Divine prophets do not know the heavenly news without the contact with the source of Divine revelation. The Qur’anic news is entirely from the source of Divine revelation.
Again, for emphasis on this very meaning, this holy verse adds: “And you were not on the side of the Mount Tur when We called (unto Moses)…” It was that time that Allah (s.w.t.) issued the command of prophethood for Moses.
The Qur’an continues saying: “…but (this revelation is) a mercy from your Lord that you warn a people to whom no warner had come before you, in order that they may receive admonition.” Shortly speaking, Allah (s.w.t.) reiterated the warnings and awakening events that had occurred in the old nations’ time when the Prophet of Islam (S) was not present and did not witness them, so that he would recite them for this misguided people, probably they cause them to…