Acts 8:27-31

And he arose and went: and behold, a man of Ethiopia, a eunuch of great authority under Candace, queen of the Ethiopians, who was over all her treasure, who had come to Jerusalem to worship; and he was returning and sitting in his chariot, and was reading the prophet Isaiah. And the Spirit said unto Philip, Go near, and join thyself to this chariot. And Philip ran to him, and heard him reading Isaiah the prophet, and said, Understandest thou what thou readest? And he said, How can I, except some one shall guide me? And he besought Philip to come up and sit with him.