The obedience springs from his faith, and therefore there is no chance for him to be lifted up, since the act of obedience is not his personal action, but is the action of his faith, and credited to him as his own.
Faith works by love
This is justification by faith alone. This is justification by faith, without works. For the faith being the gift of God, coming by the word of God, and itself working in man the works of God, needs none of the work of sinful man to make it good and acceptable to God. The faith itself works in man that which is good, and is sufficient of itself to fill all the life with the goodness of God, and needs not the imperfect effort of sinful man to make it meritorious.