NET
30 So Philip ran up to it and heard the man reading the prophet Isaiah. He asked him, “Do you understand what you’re reading?”
Darby
30 And Philip, running up, heard him reading the prophet Esaias, and said, Dost thou then know what thou art reading of?
KJV
30 And Philip ran thither to [him], and heard him read the prophet Esaias, and said, Understandest thou what thou readest?