1 John 5:6

Irenaeus Against Heresies Book IV

, and calls them into his own kingdom? And why is his goodness, which does not save all [thus], defective? Also, why does he, indeed, seem to be good as respects men, but most unjust with regard to him who made men, inasmuch as he deprives him of his possessions? Moreover, how could the Lord, with any justice, if He belonged to another father, have acknowledged the bread to be His body, while He took it from that creation to which we belong, and affirmed the mixed cup to be His blood?[470]

Tertullian On Baptism

when He had been baptized already. For He had come "by means of water and blood,"[160]

A Treatise on Re-Baptism by an Anonymous Writer

For John says of our Lord in his epistle, teaching us: "This is He who came by water and blood, Jesus Christ; not by water only, but by water and blood: and it is the Spirit that beareth witness, because the Spirit is truth. For three bear witness, the Spirit, and the water, and the blood: and these three are one; "[48]