How do we know the Scripture is sufficient for teaching?

The sufficiency of Scripture is affirmed in 2 Timothy 3:16-17, where Paul states that all Scripture is inspired by God and is profitable for teaching, reproof, correction, and training in righteousness. This emphasizes that the Bible is not a supplementary text but is sufficient for equipping believers for every good work. Elders are called to adhere to this, teaching from the text and ensuring that the church is nourished by the Word of God alone, making it essential for growth and maturity in the faith.