Here is what the Quran says about unbelievers:
Chapter 4 The Women - An-Nisa: Verse 151
They are in truth (equally) unbelievers; and we have prepared for unbelievers a humiliating punishment.
Chapter 18 The cave - Al-Kahf: Verse 102
Do the Unbelievers think that they can take My servants as protectors besides Me? Verily We have prepared Hell for the Unbelievers for (their) entertainment.
Chapter 18 The cave- Al-Kahf: Verse
And We shall present Hell that day for Unbelievers to see, all spread out,-
Chapter 33 The Coalition - Al-Ahzab: Verse 64
Verily Allah has cursed the Unbelievers and prepared for them a Blazing Fire,-
Chapter 38 Sad - Sad: Verse 27
Not without purpose did We create heaven and earth and all between! that were the thought of Unbelievers! but woe to the Unbelievers because of the Fire (of Hell)!
Chapter 40 The Forgiver - Ghafir: Verse 6
Thus was the Decree of thy Lord proved true against the Unbelievers; that truly they are Companions of the Fire!
Chapter 51 The winnowing winds - Adh-Dhariyat: Verse 60
Woe, then, to the Unbelievers, on account of that Day of theirs which they have been promised!
Chapter 9 Repentance - At-Taubah: Verse 73
O Prophet! strive hard against the unbelievers and the Hypocrites, and be firm against them. Their abode is Hell,- an evil refuge indeed.
Chapter 13 The Thunder- Ar-Rad: Verse 32
Mocked were (many) messengers before thee: but I granted respite to the unbelievers, and finally I punished them: Then how (terrible) was my requital!
Chapter 14 Abraham - Ibrahim: Verse 2
Of Allah, to Whom do belong all things in the heavens and on earth! But alas for the Unbelievers for a terrible penalty (their Unfaith will bring them)!-
Chapter 21 The Prophets - Al-Anbiya: Verse 98
Verily ye, (unbelievers), and the (false) gods that ye worship besides Allah, are (but) fuel for Hell! to it will ye (surely) come!
Chapter 24 The Light - An-Noor: Verse 57
Never think thou that the Unbelievers are going to frustrate (Allah's Plan) on earth: their abode is the Fire,- and it is indeed an evil refuge!
Chapter 32 The Prostration - As-Sajda: Verse 29
Say: "On the Day of Decision, no profit will it be to Unbelievers if they (then) believe! nor will they be granted a respite."
Chapter 33 The Coalition - Al-Ahzab: Verse 8
That (Allah) may question the (custodians) of Truth concerning the Truth they (were charged with): And He has prepared for the Unbelievers a grievous Penalty.
Chapter 41 Explained in detail - Fussilat: Verse 27
But We will certainly give the Unbelievers a taste of a severe Penalty, and We will requite them for the worst of their deeds.
Chapter 42 Council, Consultation - Ash-Shura: Verse 26
And He listens to those who believe and do deeds of righteousness, and gives them increase of His Bounty: but for the Unbelievers their is a terrible Penalty.
Chapter 66 Banning - At-Tahrim: Verse 9
O Prophet! Strive hard against the Unbelievers and the Hypocrites, and be firm against them. Their abode is Hell,- an evil refuge (indeed).
Chapter 8 Spoils of war, booty- Al-Anfal: Verse 36
The Unbelievers spend their wealth to hinder (man) from the path of Allah, and so will they continue to spend; but in the end they will have (only) regrets and sighs; at length they will be overcome: and the Unbelievers will be gathered together to Hell;-
Chapter 22 The Pilgrimage - Al-Hajj: Verse 72
When Our Clear Signs are rehearsed to them, thou wilt notice a denial on the faces of the Unbelievers! they nearly attack with violence those who rehearse Our Signs to them. Say, "Shall I tell you of something (far) worse than these Signs? It is the Fire (of Hell)! Allah has promised it to the Unbelievers! and evil is that destination!"
Chapter 3 The family of Imran -Aal-e-Imran: Verse 151
Soon shall We cast terror into the hearts of the Unbelievers, for that they joined companions with Allah, for which He had sent no authority: their abode will be the Fire: And evil is the home of the wrong-doers!
Chapter 3 The family of Imran - Aal-e-Imran: Verse 178
Let not the Unbelievers think that our respite to them is good for themselves: We grant them respite that they may grow in their iniquity: But they will have a shameful punishment.
Chapter 5 The Table Spread - Al-Maeda: Verse 80
Thou seest many of them turning in friendship to the Unbelievers. Evil indeed are (the works) which their souls have sent forward before them (with the result), that Allah's wrath is on them, and in torment will they abide.
Chapter 8 Spoils of war, booty - Al-Anfal: Verse 50
If thou couldst see, when the angels take the souls of the Unbelievers (at death), (How) they smite their faces and their backs, (saying): "Taste the penalty of the blazing Fire-
Chapter 9 Repentance - At-Taubah: Verse 26
But Allah did pour His calm on the Messenger and on the Believers, and sent down forces which ye saw not: He punished the Unbelievers; thus doth He reward those without Faith.
Chapter 9 Repentance - At-Taubah: Verse 49
Among them is (many) a man who says: "Grant me exemption and draw me not into trial." Have they not fallen into trial already? and indeed Hell surrounds the Unbelievers (on all sides).
Chapter 9 Repentance - At-Taubah: Verse 90
And there were, among the desert Arabs (also), men who made excuses and came to claim exemption; and those who were false to Allah and His Messenger (merely) sat inactive. Soon will a grievous penalty seize the Unbelievers among them.
Chapter 21 The Prophets - Al-Anbiya: Verse 39
If only the Unbelievers knew (the time) when they will not be able to ward off the fire from their faces, nor yet from their backs, and (when) no help can reach them!
Chapter 21 The Prophets- Al-Anbiya: Verse 97
Then will the true promise draw nigh (of fulfilment): then behold! the eyes of the Unbelievers will fixedly stare in horror: "Ah! Woe to us! we were indeed heedless of this; nay, we truly did wrong!"