Who is the accuser?

For men shall be lovers of their own selves..false accusers,..;And the scribes and Pharisees brought unto him a woman taken in adultery; and when they had set her in the midst, They say unto him, Master, this woman was taken in adultery, in the very act. Now Moses in the law commanded us, that such should be stoned: but what say you? This they said, tempting him, that they might have to accuse him. But Jesus stooped down, and with his finger wrote on the ground, as though he heard them not. So when they continued asking him, he lifted up himself, and said unto them, He that is without sin among you, let him first cast a stone at her. And again he stooped down, and wrote on the ground. And they which heard it, being convicted by their own conscience, went out one by one, beginning at the eldest, even unto the last: and Jesus was left alone, and the woman standing in the midst. When Jesus had lifted up himself, and saw none but the woman, he said unto her, Woman, where are those your accusers? have no man condemned you? She said, No man, Lord. And Jesus said unto her, Neither do I condemn you: go, and sin no more. Then spake Jesus again unto them, saying, I am the light of the world: he that follows me shall not walk in darkness, but shall have the light of life. Now there was a day when the sons of God came to present themselves before the LORD, and Satan came also among them. And the LORD said unto Satan, Where come you? Then Satan answered the LORD, and said, From going to and fro in the earth, and from walking up and down in it. And the LORD said unto Satan, Have you considered my servant Job, that there is none like him in the earth, a perfect and an upright man, one that fears God, and eschews evil? Then Satan answered the LORD, and said, Does Job fear God for nothing? Have not you made an hedge about him, and about his house, and about all that he have on every side? you have blessed the work of his hands, and his substance is increased in the land. But put forth your hand now, and touch all that he have, and he will curse you to your face. And the seventy returned again with joy, saying, Lord, even the devils are subject unto us through your name. And he said unto them, I beheld Satan as lightning fall from heaven. Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you.  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. And I heard a loud voice saying in heaven, Now is come salvation, and strength, and the kingdom of our God, and the power of his Christ: for the accuser of our brethren is cast down, which accused them before our God day and night. And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death. And there shall be no night there; and they need no candle, neither light of the sun; for the Lord God gives them light: and they shall reign for ever and ever.

John 8:3-12;Luke 10:17-19;Job 1:6-11;Rev. 12:9-11