Summary: The Bible tells us quite a few things about Satan.
— Satan was cast out of Heaven
Revelation 12:9 And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceives the whole world: he was cast out into the earth, and his angels were cast out with him.
Jesus said, "I beheld Satan as lightning fall from heaven." Luke 10:18
The devil sinned from the beginning. 1 John 3:8
— One-third of the angels were cast out of Heaven with Satan.
The tail of the great dragon (Satan) drew the third part of the stars (angels) of heaven,
and did cast them to the earth. Revelation 12:4
— We are told the thoughts of Satan's heart. (Isaiah 14:12-16)
How you are fallen from heaven, O Lucifer, son of the morning!
how you are cut down to the ground, which did weaken the nations!
For you have said in your heart, I will ascend into heaven,
I will exalt my throne above the stars of God:
I will sit also upon the mount of the congregation, in the sides of the north:
I will ascend above the heights of the clouds;
I will be like the most High.
Yet you shall be brought down to hell, to the sides of the pit.
They that see you shall narrowly look on you, and consider you,
saying, Is this the man that made the earth to tremble, that did shake kingdoms;
— Satan was a wise and beautiful cherub. (Ezekiel 28:11-19)
The word of the Lord came to me, saying, Son of man,
take up a lamentation upon the king of Tyrus (represents Satan)
and say to him, Thus says the Lord God;
Seal up the sum, full of wisdom, and perfect in beauty.
You have been in Eden the garden of God;
Every precious stone was your covering,
the sardius, topaz, and the diamond, the beryl, the onyx, and the jasper,
the sapphire, the emerald, and the carbuncle, and gold:
The workmanship of your tabrets and of your pipes was prepared in you in the day that you were created.
You are the anointed cherub that covers; and I have set you so:
You were on the holy mountain of God;
You have walked up and down in the midst of the stones of fire.
You were perfect in your ways from the day that you were created, till iniquity was found in you.
By the multitude of your merchandise they have filled the midst of you with violence, and you have sinned:
Therefore I will cast you as profane out of the mountain of God:
and I will destroy you, O covering cherub, from the midst of the stones of fire.
Your heart was lifted up because of your beauty,
you have corrupted your wisdom by reason of your brightness:
I will cast you to the ground, I will lay you before kings, that they may behold you.
You have defiled your sanctuaries by the multitude of your iniquities, by the iniquity of your traffic;
Therefore I will bring forth a fire from the midst of you, it will devour you,
and I will bring you to ashes on the earth in the sight of all them that behold you.
All they that know you among the people shall be astonished at you:
you shall be a terror, and you shall never be any more.
— Satan tempted Eve in the garden of Eden. (Genesis 3:1-6)
Now the serpent was more cunning than any beast of the field which the Lord God had made.
Serpent (to the woman): Has God indeed said, "You shall not eat of every tree of the garden?" (God's Word is questioned.)
The woman (to the serpent): We may eat the fruit of the trees of the garden; but of the fruit of the tree which is in the midst of the garden, God has said, ‘You shall not eat it, nor shall you touch it, lest you die."
The serpent: You will not surely die. For God knows that in the day you eat of it your eyes will be opened, and you will be like God, knowing good and evil. (God's Word is contradicted.)
So when the woman saw that the tree was good for food,
that it was pleasant to the eyes,
and a tree desirable to make one wise,
she took of its fruit and ate.
She also gave the fruit of the tree to her husband with her, and he ate.
Then the eyes of both of them were opened, and they knew that they were naked;
and they sewed fig leaves together and made themselves coverings.
— Eve told God what happened, and God punished Satan for deceiving Eve. (Genesis 3:13-15)
Note: Adam and Eve were also punished for disobeying God’s word.
The woman: The serpent deceived me, and I did eat.