A] The Holy Spirit who testifies to the truth because the Holy Spirit is truth itself.
B] The water which is a symbol to echo John the Baptizer's witness concerning the presence of the Holy Spirit at Jesus' baptism.
C] The blood which is a reminder of the blood that flows from the side of the crucified Jesus Christ.
John writes in essence that these themes serve as a testimony from the Father that Jesus is the Son of God. Those who believe this will have eternal life. John believe that understanding and accepting these themes should evoke genuine faith from the hearer (or reader) In a technical and scientific world , believing is not as easy as John might make it out to be. Some have come to think that scientific proof in the first and foremost proof of anything. For sure our minds might be sharpened but not necessarily our faith.
All of John's theology and its difficulty for some aside, as we conclude another celebration of the Christmas season, what we do come to believe is a simple reality with premises is this: God loved you so much that his son became one like us in everything but sin for one purpose: so that you and I can share in God's eternal life again. Again? Yes, because we were in God's mind for the eternity before we were brought into the world and will return to that same eternity with God after we complete our years in our mortal flesh.
