1 John 5:6-13
6 This is He who came by water and blood—Jesus Christ; not only by water, but by water and blood. And it is the Spirit who bears witness, because the Spirit is truth. 7 For there are three that bear witness: the Spirit, the water, and the blood; and these three agree as one. 9 If we receive the witness of men, the witness of God is greater; for this is the witness of God which He has testified of His Son. 10 He who believes in the Son of God has the witness in himself; he who does not believe God has made Him a liar, because he has not believed the testimony that God has given of His Son. 11 And this is the testimony: that God has given us eternal life, and this life is in His Son. 12 He who has the Son has life; he who does not have the Son of God does not have life. 13 These things I have written to you who believe in the name of the Son of God, that you may know that you have eternal life, and that you may continue to believe in the name of the Son of God.
God’s witness of Jesus Christ is validated by His baptism where the Spirit was seen on Him (Matthew 3:16) and by the blood He shed as a sacrifice for His sheep. This also is the testimony of the water and blood from the spear in His side on the cross as a testimony to His sacrifice (John 19:34-35). God’s Spirit not only bore witness in the man Jesus, but also affirms the truth as He lives in us. God’s witness in all these things is far more convincing than man’s testimony, yet we also have records of eyewitnesses that back up what God has said and done for those with weaker faith like Thomas (John 20:27-29). Christ’s coming, suffering, death, and resurrection are established truths, facts borne by God’s work and man’s witness of these things, so the witness we have in our regenerated hearts results from our faith in taking God at His word as He has proven to us in supernatural conviction and assurance. Those not being called and drawn to Him, who are not His sheep (John 10:26), they refuse to believe God’s almighty sovereign testimony and ridicule man’s witness of His work; they call God a liar. But we whose eyes and ears of our hearts have been opened assuredly know we have unending life from God in Jesus the Christ, unlike those remaining dead in their sin who deny Him. John was used by God here to assure us that we who believe to a rebirth by faith through His word and gift of grace may absolutely know where we stand for eternity, and to remind us to hold to that assurance as we persevere through death to new life forever in His presence! This is the grace in which we stand (Romans 5:2, 1 Peter 5:12), never lost nor able to be forfeited.