'Someone' in the Bible

But Jesus said, "Someone did touch me, for I perceived that power has gone out of me."

John answered, "Master, we saw someone casting out demons in your name, and we forbade him, because he doesn't follow with us."

But when someone stronger attacks him and overcomes him, he takes from him his whole armor in which he trusted, and divides his spoils.

"When you are invited by anyone to a marriage feast, don't sit in the best seat, since perhaps someone more honorable than you might be invited by him,

After a little while someone else saw him, and said, "You also are one of them!" But Peter answered, "Man, I am not!"