where did the doctrine of once saved always saved come from
Perseverance of the saints The traditional Calvinist doctrine of perseverance is articulated in the Canons of Dort (chapter 5), the Westminster Confession of Faith (Chapter XVII), the 1689 Baptist Confession of Faith (Chapter 17), and may also be found in other Reformed Confessions. Nonetheless, the doctrine is most often mentioned in connection with other salvific schemes and is not a major focus of Reformed systematic theology (for instance, it does not even get a subheading in the three volume Systematic Theology by Hodge). It is, however, seen by many as the necessary consequence of Calvinism and of trusting in the promises of God.