Iblis's Arrogance
Almighty Allah also revealed: And surely, We created you (your father Adam) and then gave you shape (the noble shape of a human being), then We told the angels, "Prostrate to Adam'; and they prostrated, except Iblis, he refused to be of those who prostrate.

(Allah) said: 'What prevented you (0 Iblis) that you did not prostrate, when I commanded you?"

(Iblis) said: "I am better than him (Adam), You created me from fire, and him You created from clay."

(Allah) said: "0 Iblis, get down from this (Paradise), it is not for you to be arrogant here. Get out, for you are of those humiliated and disgraced." Surah 7: 11-13

Iblis's Vow for Evil
(Iblis) said: "Allow me respite till the Day they are raised up (i.e. The Day of Resurrection)."

(Allah) said: "You are of those allowed respite."

(Iblis) said: "Because You have sent me astray, surely I will sit in wait against them (human beings) on Your Straight Path. Then I will come to them from before them and behind them, from their right and from their left, and You will not find most of them as thankful ones (i.e. they will not be dutiful to You)."

(Allah) said (to Iblis): "Get out from this (Paradise) disgraced and expelled. Whoever of them (mankind) will follow you, then surely I will fill Hell with you all." Surah 7: 14-18

Eating from the Forbidden Tree
"And 0 Adam! Dwell you and your wife in Paradise, and eat thereof as you both wish, but approach not this tree otherwise you both will be of the Zalimeen (unjust and wrong-doers)."

Then Satan whispered suggestions to them both in order to uncover that which was hidden from them of their private parts (before); he said: "Your Lord did not forbid you this tree save you should become angels or become of the immortals." And he (Satan) swore by Allah to them both (saying): "Verily, I am one of the sincere well-wishers for you both."

So he misled them with deception. Then when they tasted of the tree, that which was hidden from them of their shame (private parts) became manifest to them and they began to stick together the leaves of Paradise over themselves (in order to cover their shame). And their Lord called out to them (saying): "Did I not forbid you that tree and tell you: Verily, Satan is an open enemy unto you?"

They said: "Our Lord! We have wronged ourselves. If You forgive us not, and bestow not upon us Your Mercy, we shall certainly be of the losers." Allah said: "Get down, one of you an enemy to the other (i.e. Adam, Eve, and Satan, etc.). On earth will be a dwelling-place for you and an enjoyment, - for a time." He said: "Therein you shall live, and therein you shall die, and from it you shall be brought out (i.e., resurrected). Surah 7: 19-25

Traditions About Iblis
There were many traditions about Iblis at the time of the Prophet Muhammad . Ibn Masud, Ibn Abbas, and a group of the companions of the Prophet Muhammad said that Iblis had been the head of the angels in the worldly heavens. Ibn Abbas said in one narration that his name had been Azazil, and in another narration he said it had been Al-Harith. Ibn 'Abbas also said that Iblis was a jinn and that they had once been the keepers of Paradise, with Iblis the most honorable, the most learned and the most pious of them. Another tradition says that he had been one of the famous four possessors of wings (i.e. angels), before Allah transformed him into the accursed Satan.

Iblis's Vow to Mislead - Surah 38
Allah Almighty recounts Iblis's disobedience in another surah: (Remember) when your Lord said to the angels: "Truly I am going to create man from clay. So when I have fashioned him and breathed into him (his) soul created by Me, then you fall down prostrate to him." So the angels prostrated themselves, all of them: except Iblis, he was proud and was one of the disbelievers.

(Allah) said: "0 Iblis! What prevents you from prostrating yourself to one whom I have created with Both My Hands. Are you too proud (to fall prostrate to Adam) or are you one of the high exalted?" (Iblis) said "I am better than he, You created me from fire, and You created him from clay."

(Allah) said: "Then get you from here, for verily, you are outcast. And verily!, My Curse is on you till the Day of Recompense." (Iblis) said: 'My Lord! Give me then respite till the Day the (dead) are resurrected." Allah said: "Verily! You are of those allowed respite - till the Day of the time appointed." Iblis said: "By Your Might, then I will surely mislead them all, - except Your chosen slaves amongst them (faithful, obedient, true believers of Islamic Monotheism)."

(Allah) said: "The truth is, and the truth I say, - that I will fill Hell with you (Iblis) and those of them (mankind) that follow you, together." Surah 38: 71-85