They went out from us but were not of us. The revelation of God has been revealed in its entirety in the person of Jesus Christ and there is no other name by which men can be saved. To deny the full divinity, authority, and sonship of Christ is to deny the Father who sent Him. Even today, many lies about the nature of Christ persist and successfully deceive many who claim to be children of God. The Word of God is the only source of Truth we must remain steadfast and hold to what we have learned from the beginning. It is the essential responsibility of the Father to train their children up in the Lord and teach them these Truths.