'Evil One' in the Bible

I am writing to you, fathers, because you have knowledge of him who was from the first. I am writing to you, young men, because you have overcome the Evil One. I have sent a letter to you, children, because you have knowledge of the Father.

I have sent a letter to you, fathers, because you have knowledge of him who was from the first. I have sent a letter to you, young men, because you are strong, and the word of God is in you, and because you have overcome the Evil One.

The sinner is a child of the Evil One; for the Evil One has been a sinner from the first. And the Son of God was seen on earth so that he might put an end to the works of the Evil One.

In this way it is clear who are the children of God and who are the children of the Evil One; anyone who does not do righteousness or who has no love for his brother, is not a child of God.

Not being of the Evil One like Cain, who put his brother to death. And why did he put him to death? Because his works were evil and his brother's works were good.

We are certain that one who is a child of God will do no sin, but the Son of God keeps him so that he is not touched by the Evil One.

We are certain that we are of God, but all the world is in the power of the Evil One.