Faith alone is a battle cry for Protestants, but if you do a word search for it on Blueletter Bible or some such engine, you come to the letter of James, where it says, "You see that a person is justified by what he does and not by faith alone." (2:24)

CS Lewis argued in Mere Christianity that faith and works were probably both necessary for salvation. How does Calvin exegete (I love it when you guys use that word!) James 2:24?