John 7:38

Epistle of Ignatius to the Romans

but there is within me a water that liveth and speaketh,[50]

Hippolytus Dogmatical and Historical Fragments

and diffused Himself as a river,[376]

A Treatise on Re-Baptism by an Anonymous Writer

And also to those who are made lawful believers, the baptism of their own blood is wanting without mischief, because, being baptized in the name of Christ, they have been redeemed with the most precious blood of the Lord; since both of these rivers of the baptism of the Lord proceed out of one and the same fountain, that every one who thirsts may come and drink, as says the Scripture, "From his belly flowed rivers of living water; "[45]

The Letter of the Churches of Vienna and Lugdunum

And these indeed were burned, but he himself remained inflexible and unyielding, firm in his confession, being bedewed and strengthened by the heavenly fountain of the water of life which issues from the belly of Christ.[17]