"Communion presupposes union. By nature we are strangers, yea, enemies to God; but we are reconciled, brought nigh, and become his children by faith in Christ Jesus. We can have no true knowledge of God, desire towards him, access unto him, or gracious communications from him, but in and through the Son of his love. He is the medium of this inestimable privilege: for he is the way, the only way, of intercourse between heaven and earth; the sinner's way to God, and God's way of mercy to the sinner. If any pretend to know God, and have communion with him, otherwise than by the knowledge of Jesus Christ, whom He hath sent, and by faith in his name, it is proof that they neither know God nor themselves. God, if considered abstracted from the revelation of himself in the person of Jesus Christ, is a consuming fire: and if he should look upon us without respect to his covenant of mercy established in the Mediator, we could expect nothing from him but indignation and wrath. But when his Holy Spirit enables us to receive the record which he has given to his Son, we are delivered and secured from condemnation; we are accepted in the Beloved; we are united to him in whom all the fullness of the Godhead substantially dwells, and all the riches of divine wisdom, power and love, are treasured up. Thus in him, as the temple wherein the glory of God is manifested, and by him, as the representative and high priest of his people, and through him, as the living head of his mystical body the church, believers maintain communion with God. They have meat to eat which the world knows not of, honor which cometh of God only, joy which a stranger intermeddleth not with. They are for the most part poor and afflicted, frequently scorned and reproached, accounted hypocrites or visionaries, knaves or fools; but this one thing makes amends for all, "They have fellowship with the Father, and his Son Jesus Christ.""
-John Newton, from Letter XXIV, "On Communion with God"