Exegesis of the saying of Allah the Exalted: “And believe in what has been revealed to you as confirmation of what is with you, and do not be the first to disbelieve in it, and do not exchange My verses for a small price, and fear Me.”

His saying: is conjoined to His saying:
which is the Qur'an that Allah revealed to Muhammad (peace and blessings be upon him). And His saying: What is it that is with them? It is the Torah for the Jews and the Gospel for the Christians. For Allah the Exalted has made clear in the Torah and the Gospel the description of Muhammad (peace and blessings be upon him) in a complete manner, until they came to know him as they know their own sons. And His saying: means [as confirmation] of what was mentioned of his (peace and blessings be upon him) attributes and the attributes of the Qur'an that he will bring. And likewise, is a witness to their truth. So the confirmation of the Qur'an of them is from two aspects: the first aspect is that it occurred in agreement with what they reported, and the second aspect is that it has testified to their truth. So the Qur'an indicates clearly that Allah revealed the Torah and revealed the Gospel, and this is a testimony that they are the truth. And likewise, the Torah and the Gospel mentioned the Qur'an and mentioned Muhammad (peace and blessings be upon him). So when the matter occurred as they reported, that became a confirmation of them. Now, for this reason, if I told you a story and you said, "You are truthful," and then what I told you occurred as a witnessed matter that you see with your own eyes, the occurrence becomes a confirmation as well.
means it is not befitting for you, while you know that it is the truth, to be the first to disbelieve in it. And it does not mean "be the second to disbelieve." No, the meaning is that it is not befitting for you to be the first to disbelieve while you know that it is the truth.
And in His saying: the pronoun is a plural pronoun, and disbeliever is singular. So how is it correct to inform about the group with the singular? The exegetes said: The intended meaning of the speech is: "the first group to disbelieve in it," because the address is to the Children of Israel in general, and they are a group. It means: do not be the first group to disbelieve in it, because it is not befitting for you, while you know that it is the truth, to be the first of the deniers. So it was obligatory for you to be the first to believe in it.
is not "tashraw" (you sell), because "tashraw" means "you sell," while "tashtraw" means "you take by buying." And His saying: means by that fame and leadership and the like, because the Children of Israel disbelieved seeking the worldly life. If they had followed Muhammad (peace and blessings be upon him), they would have been at the top and would have been given their reward twice. But out of envy and seeking the continuation of fame and honor, and because they were the People of the Book, they envied the Prophet (peace and blessings be upon him) and did not believe in him. And His saying: indicates that whatever is of the worldly life is small, no matter how much a person magnifies it, it is nothing in relation to the Hereafter.
We say regarding the grammar of "fattaqun" (fear Me) as we said regarding: As for taqwa (mindfulness of Allah), it is: taking protection from the punishment of Allah (Mighty and Majestic) by doing His commands and avoiding His prohibitions. So in the first verse, there is a command to adhere to the Shari'ah and not to oppose it in disobedience. And in His saying: there is a command to adhere to the Shari'ah and not to oppose it, neither in the command nor in the prohibition.