The issue of adding works to the doctrine of salvation
“Outside the doctrines related to the Person and work of Christ, there is no truth more far-reaching in its implications and no fact more to be defended than that salvation in all its limitless magnitude is secured, so far as human responsibility is concerned, by believing on Christ as Saviour. To this one requirement no other obligation may be added without violence to the Scriptures and total disruption of the essential doctrine of salvation by grace alone.
Only ignorance or reprehensible inattention to the structure of a right Soteriology will attempt to intrude some form of human works with its supposed merit into…the principle of…grace.”
Quoted from: Chafer, Systematic Theology, Vol. 3, Dallas Seminary Press, Dallas, TX, 1948, p. 371.