Whoever believes in the Son of God has the testimony in himself. Whoever does not believe God has made him a liar, because he has not believed in the testimony that God has borne concerning his Son.
God does not speak outwardly but works faith within each believer's heart. So if to charge God with falsehood is the worst blasphemy, robbing Him of His honor, how could anyone dare withhold faith from the gospel, where He stakes His truth itself on Christ?
AI summary
The believer carries inward proof: he has seen his sin and need, beheld Christ's excellency and suitableness to it, felt the power of His word remaking him, and discovered love kindled to God through this revelation. That is testimony no argument can shake.
AI summary
Commenting on 1 John 5:10-13
The Spirit enlightens a man into his spiritual impotence and the completeness of Christ's blood and righteousness. Once a believer possesses this witness within himself, ten thousand artful arguments against Christ would signify nothing, he stands proof against them all.
AI summary