Acts 8:34-36, 38

And the eunuch said to Philip, “About whom, I ask you, does the prophet say this, about himself or about someone else?” Then Philip opened his mouth, and beginning with this Scripture he told him the good news about Jesus. And as they were going along the road they came to some water, and the eunuch said, “See, here is water! What prevents me from being baptized?”

And he commanded the chariot to stop, and they both went down into the water, Philip and the eunuch, and he baptized him.