2 John 1:3 - Joseph Benson’s Commentary on the Old and New Testaments

Grace be with you, &c. See on Romans 1:7. Grace takes away the guilt and power of sin, and renews our fallen nature; mercy relieves our misery; peace implies our abiding in grace and mercy. It includes the testimony of God's Spirit and of our own conscience, both that we are his children, and that all our ways are acceptable to him. This is the very foretaste of heaven, where it is perfected: in truth and love Truth embraced by a lively faith, and love to God, his children, and all mankind, flowing from discoveries of his favour.