How do we know the doctrine of Jesus Christ is true?

The doctrine of Jesus Christ is validated by both the written Word and personal conviction through the Spirit. In John 17:17, Jesus prays for His followers, saying, 'Sanctify them through thy truth: thy word is truth.' This foundational scripture asserts that God's Word is the ultimate authority on truth. Furthermore, the manifestation of God in the flesh as stated in 1 Timothy 3:16 serves as concrete evidence of the truth of Christ's nature and mission.

The transformative work that Christ performs in the lives of believers is an experiential confirmation of His truth. Many have experienced the transformative power of Christ in their lives, as indicated in 1 Timothy 6:5, where those straying from God's truth lead to disorder and division. Thus, the doctrine of Christ is supported by both objective Scripture and subjective experience, reinforcing its legitimacy as the definitive truth.