Acts 8:37
Amplified Bible (AMP)
And Philip said, If you believe with all your heart [if you have a conviction, full of joyful trust, that Jesus is the Messiah and accept Him as the Author of your salvation in the kingdom of God, giving Him your obedience, then] you may. And he replied, I do believe that Jesus Christ is the Son of God.— Acts 8:37 (AMP)