The grace of the Lord Jesus Christ and the love of God and the fellowship of the Holy Spirit be with you all. (2 Corinthians 13:14)
The grace of the Lord is the Lord Himself as life to us for our enjoyment (John 1:17 and note 1; 1 Cor. 15:10 and note 1), the love of God is God Himself (1 John 4:8, 16) as the source of the grace of the Lord, and the fellowship of the Spirit is the Spirit Himself as the transmission of the grace of the Lord with the love of God for our participation…The love of God is the source, since God is the origin; the grace of the Lord is the course of the love of God, since the Lord is the expression of God; and the fellowship of the Spirit is the impartation of the grace of the Lord with the love of God, since the Spirit is the transmission of the Lord with God, for our experience and enjoyment of the Triune God — the Father, the Son, and the Holy Spirit, with Their divine virtues. Here the grace of the Lord is mentioned first because this book is on the grace of Christ (1:12; 4:15; 6:1; 8:1, 9; 9:8, 14; 12:9). Such a divine attribute of three virtues — love, grace, and fellowship — and such a Triune God of the three divine hypostases — the Father, the Son, and the Spirit — were needed by the distracted and confused yet comforted and restored Corinthian believers. Hence, the apostle used all these divine and precious things in one sentence to conclude his lovely and dear Epistle.
This verse is strong proof that the trinity of the Godhead is not for the doctrinal understanding of systematic theology but for the dispensing of God Himself in His trinity into His chosen and redeemed people. In the Bible the Trinity is never revealed merely as a doctrine. It is always revealed or mentioned in regard to the relationship of God with His creatures, especially with man, who was created by Him, and more particularly with His chosen and redeemed people. [Excerpts from footnote 1 in the Recovery Version]