Grace to you, and peace, from God our Father and the Lord Jesus Christ.
The placing of both names under the government of one preposition implies the mysterious unity of the Father with the Son; while conversely St. John, in a parallel passage (2 John 8), by employing two prepositions, brings out the distinction between the Father, who is the fontal source, and the Son, who is the flowing stream. But both forms of the expression demand for their honest explanation, the recognition of the divinity of Jesus Christ. How dare a man, who thought of Him as other than Divine, put His name thus by the side of God's, as associated with the Father in the bestowal of grace?...The double source is one source, for in the Son is the whole fulness of the Godhead: and the grace of God, bringing with it the peace of God, is poured into that spirit which bows humbly before Jesus Christ, and trusts Him when He says, with love in His eyes and comfort in His tones, "My grace is sufficient for thee; My peace give I unto you."
(A. Maclaren, D. D.)
Parallel VersesKJV: Grace to you, and peace, from God our Father and the Lord Jesus Christ.