"Wherefore we say the faith by which we are justified is such as is not found in any but those who are made partakers of the Holy Ghost, and by him united to Christ - whose nature is renewed, and in whom there is a principle of all grace and purpose of obedience. Only we say that it is not any other grace, nor any obedience that gives life and form unto this faith; but it is this faith that gives life and efficacy to all other graces, and form to all evangelical obedience; all gospel holiness and good works presupposes faith as their root and principle: and without which there are no such things. Yet we do not assign to them the same influence to our justification which faith hath, nor indeed any influence whatever. We are justified by faith alone. For no other grace is capable of the office of faith in justification nor can be joined with it, to receive Christ and the promise of life by him, and to give glory to God on their account."
John Owen: The Doctrine of Justification by Faith Through the Imputation of the Righteousness of Christ - Explained, Confirmed, and Defended, p. 60