The second point of the post #19:
The Prophet at the beginning doubted about his apostle-hood:
[At the beginning, when the revelation to the prophet – salam to him – commenced, and he invited his people to the Islam, they refused to convert and become Muslims, but they started to ridicule him, and they said: "The one who brought to you the revelation is one of the genie and is not in fact an angel; and had God wanted to send any apostle, He should have sent some of the angels."
So the prophet returned conceiving within himself some doubt about that, and felt inferiority, and he thought: If truly I had been any prophet and if that which I heard had been true, then these men should have believed in me."
Therefore, this aya was revealed to him in order to assure him, and to affirm him in his mission, and so that he should not hesitate:]
Quran 10: 94
{
94. And if you [Mohammed] are in doubt of [the revelation] that We have sent down to you, then question those [Jews] who read the Scripture [that was] before you a.
The truth, indeed, has come to you from your Lord [not from genies b];
so be not of those who waver c.}
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94
a And say to them:
Was Moses an angel that came down from heaven, or was he a human being like you? And were the prophets, who followed after him, angels that came down from heaven or were they human beings like you?
So if they say that they were human beings like you, then know that you are an apostle; therefore, carry out your duty and warn your people; for God guides whomsoever He likes, and their guidance in fact is not up to you.
94
b As do they claim.
94
c It means:
Don't doubt about yourself, and don't feel yourself inferior to the mission, for God chooses to it anyone of His servants He likes, and He has chosen you to it.
http://quran-ayat.com/pret/10.htm#a10_94
quran-ayat(dot)com
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So their denial and their disbelief let him waver about the truth of his mission, and it might be from Satan, not from the angel.
He though with himself: If I am a true messenger, why don't these people believe me?
Therefore, God explained to him that he was like the rest of His messengers: Abraham, Moses and Jesus: all of them were human beings, not angels.
Moreover, they do not believe: not because he was not truthful, but
because God does not guide them on account of their wrong-doing and transgression on the weak and being unkind to the poor.
This is included in the following ayat:
Quran 10: 94-97, which mean:
{
94. And if you [Mohammed] are in doubt of [the revelation] that We have sent down to you, then question those [Jews] who read the Scripture [that was] before you a.
The truth, indeed, has come to you from your Lord [not from genies b];
so be not of those who waver c.
95. Nor do you cry lies to God's revelations d; for then you will lose [the prophet-hood e.]
96. They will not believe: those [associaters] against whom God's word [of punishment] is pronounced [: for in fact they deserve the punishment.]
97. [They will not believe] though every miracle comes to them [which they demanded from you, Mohammed,] till they see the painful chastisement f.}
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94
a And say to them: Was Moses an angel that came down from heaven, or was he a human being like you? And were the prophets, who followed after him, angels that came down from heaven or were they human beings like you?
So if they say that they were human beings like you, then know that you are an apostle; therefore, carry out your duty and warn your people; for God guides whomsoever He likes, and their guidance in fact is not up to you.
94
b As do they claim.
94
c It means: Don't doubt about yourself, and don't feel yourself inferior to the mission, for God chooses to it anyone of His servants He likes, and He has chosen you to it.
95
d When you say: it may be from a genie, not from an angel.
95
e While God has chosen you to it.
97
f Either in the life of the World by killing and captivity, or in the afterlife in Hell.
http://quran-ayat.com/pret/10.htm#a10_94
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Afterwards, and as the Quran revelations continued in various situations and circumstances, then the belief of the Prophet and of the believers became firm and sure, and the Prophet started to call people with determination, and he did not pay attention to the mockery of the disbelievers and idolaters, until a large number of them believed.
"Then when the revealing of many soora and ayat came to him, he was assured and became certain that he was a prophet and a messenger (or apostle) to the Arab; therefore, he started to invite his people with determination and warn them with a firm will, paying no attention to their words and minding not about their mockery, until a large number of them believed, and His saying – be glorified – in the
Quran 2: 286 was revealed, which means:
(
The messenger [Mohammed] has now believed in [the revelation] that is revealed to him from his Lord; and the believers [have also believed];
each one [of them] believes in God, His angels ..etc.)"
http://quran-ayat.com/pret/10.htm#a10_97
quran-ayat(dot)com