'Sins' in the Bible

If we confess our sins, he is faithful and righteous to forgive us our sins, and cleanse us from all unrighteousness.

and he is the propitiation for our sins; but not for ours alone, but also for the whole world.

I write to you, children, because your sins are forgiven you for his name's sake.

And ye know that he has been manifested that he might take away our sins; and in him sin is not.

Whoever abides in him, does not sin: whoever sins, has not seen him or known him.

He that practises sin is of the devil; for from the beginning the devil sins. To this end the Son of God has been manifested, that he might undo the works of the devil.

Herein is love, not that we loved God, but that he loved us, and sent his Son a propitiation for our sins.