The Bible refers to God's true church as being made up of only those who are saints (1 Corinthians 14:33; Revelation 14:12); those who are sanctified (1 Corinthians 1:2; Jude 1); those who are established in the faith and truth (Acts 16:5; 1 Timothy 3:15); those who are subject unto, or who submit self to, Christ (Ephesians 5:24); those who are joined to Christ (Ephesians 5:31-32); and finally those who are in Christ (Galatians 1:22; 1 Thessalonians 1:1).
Tinutukoy ng Biblia ang tunay na iglesya ng Dios na binubuo noong mga banal lamang (1 Corinto 14:33; Apokalipsis 14:12); niyaong mga pinaging banal (1 Corinto 1:2; Judas 1:1); niyaong mga pinalakas o pinatatag sa pananampalataya at katotohanan (Gawa 16:5; 1 Timoteo 3:15); noong mga nagpapasakop, o isinusuko ang kanilang mga sarili kay Cristo (Efeso 5:24); noong mga pinag-isa kay Cristo (Efeso 5:31-32); at panghuli, yaong mga pawang na kay Cristo (Galacia 1:22; 1 Tesalonica 1:1).