Alexander Archibald

From Hodge:

First, in the section on Original Sin in his Confession of Faith, he says, "Even infants are redeemed by Christ. And in their case, as in all others, he redeemed them from the curse of the law, being made a curse for them." (emphasis his)

So there you have it, infant faith from the great A.A. Hodge.

Later, in discussing the Covenant of Works he discusses the connection between works and grace, "All Christian graces also involve Christian duties. So that Christ at once purchases salvation for us, and applies salvation to us; commands us to do, and works in us to obey; offers us grace and eternal life on conditions, and gives us the conditions and the grace and the eternal life. What he gives us he expects us to exercise. What he demands of us he at once gives us. Viewed on God's side, faith and repentance are the gifts of the Son. Viewed on our side, they are duties and gracious experiences, the first symptoms of salvation begun--instruments wherewith further grace may be attained. Viewed in connection with the covenant of grace, they are elements of the promise of the Father to the Son, conditioned upon his mediatorial work. Viewed in relation to salvation, they are indices of its commencement and conditions sine qua non of its completion."

Which is to say, "You see then that a man is justified by works and not by faith only." (Js. 2:24) AND "knowing that a man is not justified by the works of the law but by faith in Jesus Christ, even we have believed in Christ Jesus, that we might be justified by faith Christ and not by works of the law; for by works of the law no flesh shall be justified." (Gal. 2:16)

Even granting that James and Paul are using differing definitions of "works" here, the fact remains that it's all grace first to last dumped on us and piled up high and BECAUSE it is grace, we do not cease to faithfully exercise and implement this grace in every square inch of our lives, working out what He works in, as my pastor likes to say.