I give thanks to my God always for you because of the grace of God that was given you in Christ Jesus, because in every way you were enriched in him in all speech and knowledge – even as the testimony of Christ was established among you – so that you are not lacking in any spiritual gift, as you wait for the revealing of our Lord Jesus Christ, who will establish you to the end, blameless in the day of our Lord Jesus Christ. God is faithful, by whom you were called into the fellowship of his Son, Jesus Christ our Lord (1 Cor. 1:4-9).
If we are ever plagued by doubts as to whether we can persevere in faith, this should be a comforting text. Given that the gospel was established among even this band of unruly believers, Paul was confident that Christ would then establish them until the time of the parousia.
This is not a terribly elaborate defense of the doctrine of the perseverance of the saints, but it is significant that Paul hangs the final blamelessness of the Corinthians on the faithfulness of God. In a complementary text, Jesus announces, ‘It is the will of him who sent me that I should lose nothing of all that he has given me’ (John 6:39). Should we gather, then, that to deny the doctrine of the perseverance of the saints is to call into question the faithfulness of God and the commitment of Christ to fulfill his Father’s will? Thoughts pastoral, polemical, or otherwise?