1 John 3:4-6
Everyone who makes a practice of sinning also practices lawlessness; sin is lawlessness. You know that he appeared in order to take away sins, and in him there is no sin. No one who abides in him keeps on sinning; no one who keeps on sinning has either seen him or known him.
So which is it? Are we always sinners and liars if we say we don't, and therefor not abiding in Him, or can we throw off sin like a millstone and abide in Him?