Jamieson-Fausset-Brown Reformed @jfbcommentary

Grace . . . peace--The very form of this salutation implies the union of Jew, Greek, and Roman. The Greek salutation was "joy" (chairein), akin to the Greek for "grace" (charis). The Roman was "health," the intermediate term between grace and peace. The Hebrew was "peace," including both temporal and spiritual prosperity. Grace must come first if we are to have true peace. from . . .

Albert Barnes Presbyterian @notesbybarnes

Verse 2. Grace be unto you, etc. . (b) "be unto you"

John Gill Reformed Baptist @doctorgill

Grace be unto you,.... This form of salutation is used by the apostle in all his epistles; See Gill on Rom 1:7; ; Philippians 1:3 phi 1:3 phi 1:3 phi 1:3I thank my God,.... After the inscription and salutation follows a thanksgiving, the object of which is God; to whom thanks is to be given at the remembrance of his name, and the perfections of...