'Someone' in the Bible

He said, "How can I, unless someone explains it to me?" He begged Philip to come up and sit with him.

The eunuch answered Philip, "Who is the prophet talking about? About himself, or about someone else?"

Now, behold, the hand of the Lord is on you, and you will be blind, not seeing the sun for a season!" Immediately a mist and darkness fell on him. He went around seeking someone to lead him by the hand.

But Paul didn't think that it was a good idea to take with them someone who had withdrawn from them in Pamphylia, and didn't go with them to do the work.