This is he who came by water and blood, Jesus Christ. He did not come with the water only, but with the water and with the blood. The Spirit gives witness because it is the truth.

As they were eating, Jesus took bread, blessed, and broke it; and he gave to the disciples. Then he said: Take, eat; this is (represents) (means) (exemplifies) my body.

Go and make disciples of all the nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit.

I will send the helper from the Father, the Spirit of truth, which proceeds from the Father to bear witness of me.

The Spirit itself (Greek:autos ho pneuma) (itself the Spirit) bears witness with our spirit (mind and heart), that we are children of God.

Those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Spirit,

The water

Suddenly there came a sound from heaven like a rushing mighty wind. It filled the house where they were sitting.

He also sealed us, and gave us the guarantee of the Spirit in our hearts.

The blood

Jesus suffered outside the gate that he might sanctify the people through his own blood.

This was a symbol pointing to baptism, which now saves you. It is not the washing off of bodily dirt, but the promise made to God for a good conscience. It saves you through the resurrection of Jesus Christ.

And these

Many gave false witness against him. But their witness was not in agreement.

The words of the prophets agree to this for it is written: