Some form of “membership” in a local congregation is clearly assumed throughout the New Testament, although no specifics are given as to its formalities, e.g., Mat. 18:15-17; Acts 20:17, 28; 1 Cor. 5:12; Col. 4:5; 1 Thes. 5:12; Heb. 10:24; 13:17; 1 Pet. 5:2-3.
- Their initial profession of faith in Christ and baptism (if they are unbaptized);
- A letter of dismissal from another evangelical church; or
- A re-affirmation of their faith if they have been inactive, etc.