'Someone' in the Bible

And he said, “Well, how could I [understand] unless someone guides me [correctly]?” And he invited Philip to come up and sit with him.

The eunuch replied to Philip, “Please tell me, about whom does the prophet say this? About himself or about someone else?”

‘Look, you mockers, and marvel, and perish and vanish away;For I am doing a work in your days,A work which you will never believe, even if someone describes it to you [telling you about it in detail].’”