What are the importance of the new testament canonicity to christian faith?

As an integral part of the written Word of God, the Christian Greek Scriptures are of inestimable value. They contain four accounts of the ministry of God’s only-begotten Son, including his origin, his teaching, his example, his sacrificial death, and his resurrection. The historical record of the formation of the Christian congregation and the outpouring of the holy spirit, which enabled it to grow so successfully, as well as details concerning its problems and how they were resolved—all of this is so essential for the operation of the true Christian congregation today. The separate books that were independently written for particular persons or situations, or with a special view and purpose in mind, all merge to form a great unified complete entity with no details lacking. They complement and complete the Bible canon and are presently of universal importance, interest, and concern primarily to spiritual Israel, which is the congregation of God, but, additionally, to all persons who seek the approval of God.