Acts 8:37 in the King James Version
And Philip said, If thou believest with all thine heart, thou mayest. And he answered and said, I believe that Jesus Christ is the Son of God.
Context
36 As they went on the way, they came to some water; and the eunuch said, “Behold, here is water. What is keeping me from being baptized?”
37 And Philip said, If thou believest with all thine heart, thou mayest. And he answered and said, I believe that Jesus Christ is the Son of God.
38 He commanded the chariot to stand still, and they both went down into the water, both Philip and the eunuch, and he baptized him.