Whoever says, "I know him," but does not do what he commands is a liar, and the truth is not in that person.

But if anyone obeys his word, love for God is truly made complete in them. This is how we know we are in him:

Whoever says he abides in him ought to walk in the same way in which he walked

Beloved, I am writing you no new commandment , but an old commandment that you had from the beginning the old commandment is the word that you have heard