What was Satan's first sin?

[FrozenConcentrate]

I believe that Satan's first sin was pride... and that the first sin of Adam and Eve was also pride. I believe that the very origin of sin is pride... which might be why they call it "original" sin. 

[Patricia]

I believe so too Rastapasta.  I have a question.  Since I have free will will it still be possible for me to sin after I get to heaven after years (and years....! in Purgatory) like Lucifer did? Would it still be possible for me to have pride creep in and rebel against God after going to heaven?  Or was everything cleaned up after Lucifer was thrown out?

[odhiambo]

I believe so too Rastapasta.  I have a question.  Since I have free will will it still be possible for me to sin after I get to heaven after years (and years....! in Purgatory) like Lucifer did? Would it still be possible for me to have pride creep in and rebel against God after going to heaven?  Or was everything cleaned up after Lucifer was thrown out?

When you go to heaven Patricia, you will take on God’s own nature, He will indwell you completely. We know that God cannot sin. That too will be our nature in heaven. Though we will still have a free will,  it will be good bye to sin and good riddence too; we will have no inclination at all to sin

[Patricia]

But will it be possible to commit the same folly as Lucifer and his fallen angels did while in heaven?

[Shin]

No, no, because Lucifer didn't have the beatific vision of God.

Once you have this, you will never part from God or sin again.

[Patricia]

That's a relief. But why didn't Lucifer have the beatific vision? Don't all angels in heaven have the beatific vision? 

[Shin]

No, when the angels were all first created they were all like Adam and Eve, they started off in a state of probation.

No one has ever had the beatific vision without being put through a test first.

[Shin]

The story of Adam and Eve and the story of the angels.. it is a similar history. . no?

[Patricia]

Thanks, good to learn.

[pebbles]

Isn't PRIDE which is Satan's sin?    Lucifer is the most beautiful angel...His name mean light right? He was so proud of his beauty... even thought he was more beautiful than God.

[odhiambo]

Isn't PRIDE which is Satan's sin?    Lucifer is the most beautiful angel...His name mean light right? He was so proud of his beauty... even thought he was more beautiful than God.

 

[martin]

Isn't PRIDE which is Satan's sin?    Lucifer is the most beautiful angel...His name mean light right? He was so proud of his beauty... even thought he was more beautiful than God.

When Lucifer stood in rebellion against God it was the voice of St Michael (from a lower rank of the angelic choirs) who defended the glory of God with the words, "Who is like unto God." 
Those words are now a powerful prayer against temptation.

[Poche]

Satan's first sin was to say "Non Serviam." (I will not serve.) to God.

[odhiambo]

Satan's first sin was to say "Non Serviam." (I will not serve.) to God.

Yes, he was full of himself

[pebbles]

Satan's first sin was to say "Non Serviam." (I will not serve.) to God.

Could this be a response to God that angels are to guide man?  It's like he doesn't understand doesn't want to understand why God loves us so much.  We are such flawed creatures and yet we are the most beloved.

[Benedict]

I have trouble conceiving the possibility of sin in Heaven, therefore I not comfortable with the typical explanations given by most people. The fallen angels, created as pure spirits, must have done something that was not in essence a sin. Since all creatures, material and spiritual, have the free will of choosing to accept God or not, it could be possible to reject Him without committing any sin. This possibility must be true in order to keep free will valid. The consequences of rejecting God, in the other hand, must have left these angels without the necessary state of grace to keep them without sin. Once they were able to commit sin there was no place for them in Heaven anymore. Since they are pure spirits, the mentioned battle with Michael and the other faithful angels has no literal meaning. No swords, no weapons, no violence. Sin is incompatible with Heaven, and like two equal magnetic poles, they repeal each other. There was no place to go in the Universe other than Earth. Where man has just evolved and has been provided with a soul. All of this, of course, is just theory. Please, feel free to comment on this and bear with me because my English is not that good.

Your suppositions are incorrect. The devil sinned by apostasy. He chose to abandon the worship of God and the religion of the angels and to establish himself with a throne in heaven in opposition to God and claiming to be "like the Most High".
The Holy Archangel Michael shouted down the devil saying "Who is like God?" And God cast satan and his apostate angels out of heaven and they fell as lightning!
Thus, all the angels that apostatized and worshipped the devil instead of God were cast out of heaven with all justice!
You do not get to choose to reject God, rejection of God IS Hell. The devil and his apostate angels chose hell, because they would rather burn in unending fire than serve and worship the Lord God.
The fall of the devil happened before the earth was made. It is typically associated with the verse And God saw the light, that it was good: and God divided the light from the darkness.
Thus, the heavenly reality is said to have first been created before the corporeal reality was made.
Rather the devil, being in a state of hell, wished for all humans to become like him and join in his apostasy from Almighty God.
Though, God knew the evil deeds of the devil before they occurred, God already had planned to send a Savior even before the Fall of Man.