1 John 2:21 I have not written to you because you do not know the truth, but because you know it, and that no lie is of the truth.
John wrote this, not because you dont know anything about truth, but confirming what you already know about the Jesus. Its not an education or a chant. Jesus was invited into our lives, His Spirit took up residence, we are led by Him. This knowledge is only evident because of the LORD. Ive come to know, just simply give the truth. He placed the truth in our hearts.