How do we know God's doctrine is true?

God's doctrine is true because it comes from the infallible Word of God, which Peter states lives and endures forever (1 Peter 1:25). This doctrine reveals the perfect person and work of Christ, who is the cornerstone of our faith. In Deuteronomy 32:4, Moses describes God as 'the Rock', indicating that His ways are perfect and just. Therefore, God's doctrine not only withstands the test of time but also reflects His character, truth, and the reality of salvation through Jesus Christ, making it indispensable for believers. When we understand and embrace this doctrine, we see how it sustains and transforms lives.