3:4-5 Whosoever
committeth sin transgresseth also the law: for sin is the transgression of the
law. And ye know that he was manifested to take away our sins; and in him is no
sin.
The NKJV renders verse 4 as “whoever commits sin also
commits lawlessness, and sin is lawlessness.” John defines sin with a single
word: lawlessness. Very simply it means “to act contrary to the law.” This
implies that mankind is aware of the law but elects to act in a manner opposed
to the law’s requirements.