The Universal Church of the Kingdom of God affirms the Protestant biblical canon of 66 books — the 39 books of the Old Testament and 27 books of the New Testament. The apocryphal or deuterocanonical books are not included in the UCKG canon. Scripture is understood as the complete and sufficient written revelation of God and as the foundation for all doctrine and practice.

Both the Old and New Testaments are regarded as authoritative and divinely inspired. The UCKG draws on Old Testament narratives, wisdom literature, and prophecies to support its theology. The New Testament, particularly the Gospels and Paul's epistles, is central to UCKG teaching on salvation, the Holy Spirit, spiritual authority, and eschatology. The UCKG uses Scripture extensively in preaching and teaching to support doctrinal positions and to call believers to obedience and faith.

The biblical canon is understood as closed — no new books are added. However, ongoing revelation through prophecy, words of knowledge, and apostolic leadership interpretation of Scripture is affirmed alongside the fixed canon. Scripture remains the final authority against which all teachings and prophetic words must be measured, but the canon does not preclude the continuing guidance of the Holy Spirit and the teaching office of the church.