61.

Would it be possible for Satan to repent and become good?

Bible: No Qur'an: Yes

Revelation 12:9 & 20:10 – 9. And the great dragon was cast out, that old serpent, called the Devil and Satan, who deceiveth the whole world; he was cast out into the earth, and his angels were cast out with him. 10. And the devil that deceived them was cast into the lake of fire and brimstone… and shall be tormented day and night forever and ever.

Al-Baqarah 2:208 – .Do not walk in Satan’s footsteps; assuredly he is an open enemy to you.

Yusuf 12:5 – Satan is an open enemy to man.

Az-Zukhruf 43:36-39 – 36. We set a devil upon him, who becomes his comrade… 39.(Then it will be said to them): “Now you have done wrong, it avails you nothing today that (you and your satans) are partners in the torment.”