Happy is our sacrament of water, in that, by washing away the sins of our early blindness, we are set free and admitted into eternal life!
But we, little fishes, after the example of our ΙΧΘΥΣ Jesus Christ, are born in water, nor have we safety in any other way than by permanently abiding in water; so that most monstrous creature, who had no right to teach even sound doctrine, knew full well how to kill the little fishes, by taking them away from the water!
Tertullian
On Baptism
Chapter I