We know that anyone born of God does not continue to sin; the One who was born of God keeps them safe, and the evil one cannot harm them.
We know that we are children of God, and that the whole world is under the control of the evil one.
We know also that the Son of God has come and has given us understanding, so that we may know him who is true. And we are in him who is true by being in his Son Jesus Christ. He is the true God and eternal life.