A Treatise on Re-Baptism by an Anonymous Writer Moreover, I think also that we have not unsuitably set in order the teaching of the Apostle John, who says that "three bear witness, the Spirit, and the water, and the blood; and these three are one."[61] Origen Commentary on John Book VI "I have a baptism to be baptized with, and how am I straitened till it be accomplished? "And it agrees with this that the disciple John speaks in his Epistle[127]