Can you lose your salvation?
Many Protestant traditions believe that final salvation, while unconditional on God’s side, requires the continued faithfulness of the believer, which is possible because of the Holy Spirit but is not guaranteed. While continued salvation is not tenuous or based on the believer’s works, it is possible for the believer to turn away from Christ and thereby forfeit salvation. All of these traditions believe that salvation is synergistic—that is, they believe that both God and human beings are actors in the salvation process, although God is always the initiator and humans can only respond.
The Reformed tradition, however, picking up some aspects of Augustine’s teaching, believes salvation to be monergistic—that is, God is the sole cause of salvation. Because human beings contribute nothing to the salvation process, not even a free-will response, all individuals who are chosen by God for salvation will inevitably be preserved by God until final salvation. This view, called the “perseverance of the saints,” forms the “P” of the mnemonic acronym TULIP, which is often used to teach the Reformed view of salvation. The doctrine of perseverance means that any individuals who seem to commit apostasy were never really believers at all.