The COGC accepts the 66-book Protestant canon as the complete, inspired, and authoritative Word of God. The deuterocanonical books are not considered canonical Scripture. Scripture alone is the supreme authority for faith and practice — no council, creed, tradition, or human authority stands above it. This sola scriptura commitment is fundamental to the COGC's identity as a Restorationist movement seeking to return to the plain teaching of the Bible.

The COGC's rejection of the Trinity, its affirmation of soul sleep, and its annihilationist position on hell are all presented as exegetically derived from the 66-book canon. The authority of these positions rests entirely on their claimed fidelity to Scripture. If Scripture taught differently, the COGC would be obligated to revise its doctrine — the canonical text is the final court of appeal.

The Atlanta Bible College, the COGC's educational institution, trains ministers in careful biblical exegesis and study of the original languages. This exegetical seriousness reflects the COGC's conviction that its non-Trinitarian, conditionalist theology is the plain meaning of Scripture when read without the presuppositions of Nicene orthodoxy.