'Sins' in the Bible

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

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

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

And ye know that he was manifested to take away sins; and in him is no sin.

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