Overall meaning :
Allah, Exalted and Sublime be He, shows the evil fate of those who do not seek with their words and deeds other than Allah’s good pleasure: For those who seek with their striving and good deeds only the life of this world and its adornment and glitter, We will repay them in full for their works in this life, and their reward will not be in the least diminished. These are the ones who will have nothing in the hereafter except the Fire, in which they burn and suffer its intense heat. Fruitless will be their good deeds, and vain will be all their works, for they have not done them solely for Allah’s good pleasure.
The Almighty further says: Are those, then, who follow clear guidance and stand on manifest evidence from their Lord, which is followed up and supported by another witness from Allah, that conforms to, and follows, such evidence, namely the Qur’an, and yet another witness before the Qur’an, namely the Torah, which was revealed to Moses as a guide for the Israelites and mercy from their Lord towards them, the same as those who care only for this worldly life and its glitter? Those who follow clear guidance and stand on manifest evidence from their Lord believe in this Qur’an and act in accordance with its commandments. As for those who reject the Qur’an and disbelieve in it from among those who oppose the Messenger of Allah, may Allah bless him and grant him peace, they will be consigned to the Fire which will inevitably be their appointed place on Judgement Day. Therefore, do not have the least doubt, Messenger, of the Qur’an being from your Lord given the proofs attesting to this. Know that it is undoubtedly the truth from your Lord, but most people do not believe so, out of sheer obstinacy and arrogance.