The Canons of Dordrecht
The Fifth Main Point of Doctrine: The Perseverance of the Saints
Article 6: God’s Saving Intervention
For God, who is rich in mercy, according to his unchangeable purpose of election does not take his Holy Spirit from his own completely, even when they fall grievously. Neither does he let them fall down so far that they forfeit the grace of adoption and the state of justification, or commit the sin which leads to death (the sin against the Holy Spirit), and plunge themselves, entirely forsaken by him, into eternal ruin.