The voice

 satan thinks he is G-d’s friend
 In your own silence, you are supposed to say, “I seek refuge with Allah (SWT) from the rejected enemy of all human beings.”  G-d says of the shaytan in Quranic Arabic he is, “Aduwan nas,” translated, “He is the enemy of all humans. He is not G-d’s enemy. He thinks he is G-d’s friend. Many you don’t know this.  But please take my word for it and you will learn to understand it better as you get older and study the religion.  Shaytan thinks he’s G-d’s friend and do you know what he thinks his job is? To bring human beings down. To make them do wrong. And if they pass his test he says, “G-d those are Yours”

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." Quran Ayah 7:11-13