Who is obligated [to cast out false theology]?

This duty is incumbent on (1) preachers of Christian truth (Titus 3:10–11; Acts 15:2; Gal. 2:11, 14); (2) the magistrate (2 Kings 10:25), to whom it was formerly prescribed to resist false theology, even with capital punishment (Deut. 13:5; 18:20; 1 Kings 18:40); and (3) whoever has professed Christian truth (Matt. 7:15; Rom. 16:17; 2 Thess. 3:14; 2 Tim. 2:16–17; Titus 3:10–11; 2 John 10).

Reasons for these things Indeed, false theology must be resisted because it (1) strives to overturn the gospel of Christ (Gal. 1:7); (2) blasphemes the way of truth (2 Peter 2:2); (3) bewitches people so that they do not yield to the truth (Gal. 3:1); (4) ransacks churches (Acts 15:24; Gal. 1:7; 5:10, 12); (5) is destructive (2 Peter 2:2–3); and (6) is hateful to Christ (Rev. 2:6, 15).

PETRUS VAN MASTRICHT, THEORETICAL-PRACTICAL THEOLOGY, VOLUME 1: PROLEGOMENA, 232.