Acts 8:34-36, 38

And the eunuch answered Philip, and said, I pray thee, of whom speaketh the prophet this? of himself, or of some other? And Philip opened his mouth, and beginning from this scripture, preached unto him Jesus. And as they went on the way, they came unto a certain water; and the eunuch saith, Behold, here is water; what doth hinder me to be baptized?

And he commanded the chariot to stand still: and they both went down into the water, both Philip and the eunuch; and he baptized him.