Acts 8:34-36, 38

So the eunuch answered Philip and said, “I ask you, of whom does the prophet say this, of himself or of some other man?” Then Philip opened his mouth, and beginning at this Scripture, preached Jesus to him. Now as they went down the road, they came to some water. And the eunuch said, “See, here is water. What hinders me from being baptized?”

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