The first is an emphasis on the concerning matter...

“A revelation of the Mighty, the Merciful.” 6. “That you may warn a people whose fathers were not warned, hence they are heedless.” The origin of the descent of The Qur’an is Divine Power and Mercy, and whoever attaches it, reaches honour and grace. This holy verse implies that this is The Qur’an which has been sent down from the side of Allah, the Mighty, the Merciful.

It says: “A revelation of the Mighty, the Merciful.” The emphasis of the holy verse on the fact that Allah is ‘Mighty’ is for the statement of His power over such a great Book which remains during all centuries as an eternal miracle, and no power is able to wipe out its greatness from the hearts of the believers. The emphasis on mercifulness of Allah is for the statement of this fact that His Mercy has required that He bestows such a great bounty on human beings.

So, if people try to deny and belie the truth, Allah has threatened them by His Might, and if they come forth with submission and acceptance, Allah has given them glad tiding by His Mercy.[^2] Therefore, His Might and Mercy, one of which is the symbol of warning, and the other is the symbol of glad tiding, have mixed with together and He has given this great heavenly Book to men.

Here, there arises a question that why the addressee in this sentence has been taken the holy Prophet (S), not the polytheist nor the people in general. The answer is that: the purpose has been in this fact that He emphasizes that you are legitimate and on the straight path, whether they accept it or not. For this very reason, you should be earnest in the heavy mission of your messengership, and do not let the least discouragement come to you because of the rejection of the opponents.