The passage of Scripture he was reading was this: ‘Like a sheep he was led to the slaughter, and like a lamb silent before its shearer, so he does not open his mouth.
In context
30Philip ran up and heard him reading the prophet Isaiah. “Do you really understand what you are reading?” he asked. 31“How could I,” the man said, “unless someone guides me?” And he invited Philip to climb up and sit with him. 32The passage of Scripture he was reading was this: ‘Like a sheep he was led to the slaughter, and like a lamb silent before its shearer, so he does not open his mouth. 33In his humiliation his judgment was taken away. Who can speak of his generation? For his life is taken from the earth.’ 34The eunuch said to Philip, “Tell me, please: who is the prophet speaking about — himself, or someone else?”
