Heresy
The Greek Word and Its Background
The English word 'heresy' comes from the Greek word meaning 'choice' or 'that which is chosen.' In classical Greek, the term was used neutrally to describe a chosen course of action, a school of thought, or a philosophical tendency. It could refer to any distinct group or faction, whether positive or negative. The historian Polybius, for example, used it to describe those devoted to Greek literature.
In this neutral sense, the word appears in the book of Acts to describe various Jewish groups. The Sadducees are called a 'sect' using this word (Acts 5:17), as are the Pharisees, described as 'the strictest sect' of Judaism (Acts 26:5). Early Christianity itself was labeled by its opponents as 'the sect of the Nazarenes' (Acts 24:5), and Paul acknowledged that the Way was spoken of as a sect (Acts 24:14; 28:22).
Heresy as Division in the Church
As the word migrated into specifically Christian usage, it took on increasingly negative connotations. Paul uses it in 1 Corinthians 11:19 in the context of divisions at the Lord's Supper: "For there must be factions among you in order that those who are genuine among you may be recognized." Here the word describes internal divisions that, while painful, serve to reveal who truly belongs to the community of faith.
In Galatians 5:20, Paul lists heresies (translated as 'divisions' or 'factions' in many versions) among the works of the flesh, alongside strife, jealousy, and anger. At this stage, the emphasis is on the divisive effect of such choices rather than on specific doctrinal errors. When individuals within the church elevate their personal preferences or distinctive teachings above the common faith, they create factions that tear apart the unity Christ intended for his people.
The Shift Toward Doctrinal Error
Second Peter 2:1 marks a significant development in the word's meaning, moving it toward the specifically doctrinal sense it would carry in later church usage. Peter warns: "False prophets also arose among the people, just as there will be false teachers among you, who will secretly bring in destructive heresies, even denying the Master who bought them." Here, heresies are not merely factions but deliberately introduced false teachings that deny fundamental truths about Christ.
The entire second chapter of 2 Peter describes these false teachers in vivid terms: they exploit believers with fabricated stories, follow corrupt desires, despise authority, and lead others astray. Their heresies are called 'destructive' because they undermine the foundation of the faith and lead both teachers and followers toward spiritual ruin.
Titus and the Heretical Person
Paul's letter to Titus provides practical guidance for dealing with a person who promotes heresy within the church. Titus 3:10 instructs: "As for a person who stirs up division, after warning him once and then twice, have nothing more to do with him." The Greek word used here is the root from which 'heretic' derives. The emphasis is on the person's divisive behavior and stubborn refusal to accept correction. After two warnings, the church is to separate from such an individual, recognizing that continued engagement is futile and harmful.
The Development of the Concept
The journey of this word from neutral philosophical term to serious ecclesiastical charge reflects the early church's growing awareness that doctrinal integrity matters. In a context where there was one standard of truth, one Lord, and one faith (Ephesians 4:5), any arbitrary departure from the common apostolic teaching was not merely an intellectual disagreement but a threat to the community's spiritual life and unity.
By the time of the early church fathers, heresy had acquired its full ecclesiastical meaning: the persistent, obstinate maintenance of error regarding central Christian doctrines, combined with aggressive promotion of that error within the church. The New Testament itself does not fully develop this later definition but lays the groundwork for it in its warnings against false teaching and division.
The Biblical Response to Heresy
The New Testament prescribes several responses to heresy. Teaching sound doctrine is the first line of defense (Titus 2:1; 2 Timothy 4:2-3). Personal warning and correction follow (Titus 3:10). When these fail, separation from the false teacher is necessary to protect the community (2 John 10-11). Throughout, the goal is not merely to win an argument but to preserve the truth of the gospel and the unity of the body of Christ.
Biblical Context
The word for heresy or sect appears in Acts 5:17, 24:5, 24:14, 26:5, and 28:22 in its neutral sense of a religious party. It takes on negative connotations in 1 Corinthians 11:19 and Galatians 5:20, where it describes harmful divisions. Second Peter 2:1 introduces the explicitly doctrinal dimension of destructive false teachings. Titus 3:10 provides practical instructions for dealing with divisive persons in the church.
Theological Significance
The biblical treatment of heresy affirms that truth matters and that the church has a responsibility to guard the apostolic faith. The progression from neutral term to serious charge reflects the early church's recognition that doctrinal unity is essential to the health and mission of the body of Christ. Heresy is dangerous not merely as intellectual error but because it divides the community, undermines faith, and can lead people away from the saving truth of the gospel. At the same time, the New Testament approach to heresy emphasizes patient instruction and multiple warnings before separation.
Historical Background
In the Greco-Roman world, philosophical schools were commonly called by this term without any negative connotation. The Stoics, Epicureans, and other groups were all described as such schools of thought. Jewish usage similarly applied the term to the Pharisees, Sadducees, and Essenes. The transition from neutral to negative usage occurred within early Christianity as the church distinguished itself from other Jewish sects and recognized the need to maintain doctrinal boundaries. The great ecumenical councils of the fourth and fifth centuries formalized the process of defining and condemning heresy.