We know the witness of God is true because it is corroborated by the Holy Spirit, the Father, and the Son, all of whom testify to the same truth.
The witness of God is grounded in the reality that there are multiple witnesses who affirm the truth about Jesus Christ. In 1 John 5, we see that the Spirit bears witness, and there are three that bear record in heaven: the Father, the Word (Son), and the Holy Spirit. These witnesses are truthful because God cannot lie, affirming the authenticity and reliability of their testimony. Moreover, the harmony between their witnesses strengthens our assurance in the truth of the gospel, emphasizing that Jesus is the embodied fulfillment of God's promises for salvation.
Scripture References:
1 John 5:7-8, 1 John 5:7, John 8:12-16
Commentary