The Father sent His Son, His Word, a Voice, Jesus Christ, of the same nature with Him to bring knowledge of God to man, who lacked it and could never find it on his own. But more than that, He brought grace and truth from the fullness of the Divinity, to make men sons of God. Sons of God by grace, true sons of the Divinity through the Only-begotten Jesus Christ, Who is Son by nature, the One Son Who grants us to share in His sonship.