The Canons of Dordrecht
The Fifth Main Point of Doctrine: The Perseverance of the Saints
Rejection of the Errors: Concerning the Teaching of the Perseverance of the Saints Having set forth the orthodox teaching, the Synod rejects the errors of those
VII. Who teach that the faith of those who believe only temporarily does not differ from justifying and saving faith except in duration alone.
For Christ himself in Matthew 13:20ff. and Luke 8:13ff. clearly defines these further differences between temporary and true believers: he says that the former receive the seed on rocky ground, and the latter receive it in good ground, or a good heart; the former have no root, and the latter are firmly rooted; the former have no fruit, and the latter produce fruit in varying measure, with steadfastness, or perseverance.