As an addendum to the earlier post below, Dulles quotes Luther and Melancthon in a footnote in his Josephinum article:
Luther, in his 1535 Commentary on Galatians 3:10, distinguishes between faith in the abstract and concrete, embodied faith. Of the latter he writes: “It is no wonder, then, if merits and rewards are promised to this incarnate faith, such as the faith of Abel, or to faithful works” (Luther’s Works, vol. 26 [St. Louis: Concordia, 1963], 265).
Melanchthon in his Apology for the Augsburg Confession declares: “We teach that good works are meritorious — not for the forgiveness of sins, grace, or justification (for we obtain these only by faith) but for other physical and spiritual rewards in this life and in that which is to come” (Apol. 4:194; Book of Concord [quarto edition] [Philadelphia: Fortress, 1959], 133; cf. 4:367, p. 163). In another edition (Minneapolis: Fortress, 2000), the Book of Concord states: “Since therefore works constitute a kind of fulfillment of the law, they are rightly said to be meritorious, and it is rightly said that a reward is owed to them” (4:358, p. 171).