Sukkah 52a-b:

In the time to come the Holy One, blessed be He, will bring the Evil Inclination and slay it in the presence of the righteous and the wicked.  To the righteous it will have the appearance of a towering hill, and to the wicked it will have the appearance of a hair thread.  Both the former and the latter will weep; the righteous will weep saying, ‘How were we able to overcome such a towering hill!'  The wicked also will weep saying, ‘How is it that we were unable to conquer this hair thread!'

And the Holy One, blessed be He, will also marvel together with them, as it is said, Thus says Hashem of Hosts, If it be marvelous in the eyes of the remnant of this people in those days, it shall also be marvelous in My eyes.

R. ‘Avira or, as some say, R. Joshua b. Levi, made the following exposition: The Evil Inclination has seven names.

The Holy One, blessed be He, called it Evil, as it is said, For the imagination of man's heart is evil from his youth.

Moshe called it the Uncircumcised, as it is said, Circumcise therefore the foreskin of your heart.

David called it Unclean, as it is said, Create me a clean heart, O Hashem, which implies that there is an unclean one.

Shlomo called it the Enemy, as it is said, If your enemy be hungry, give him bread to eat and if he be thirsty give him water to drink. For you will heap coals of fire upon his head, and the Hashem will reward you; read not, ‘will reward you' but ‘will cause it to be at peace with you.'

Yeshayahu called it the Stumbling-Block, as it is said, Cast you up, Cast you up, clear the way, take up the stumbling-block out of the way of my people.

Yechezkel called it Stone, as it is said, And I will take away the heart of stone out of your flesh and I will give you a heart of flesh.

Yoel called it the Hidden One, as it is said, But I will remove far off from you the hidden one.