'Someone' in the Bible

Since the world began it has never been heard of that anyone opened the eyes of someone born blind.

Jesus said to him, "Someone who has bathed only needs to have his feet washed, but is completely clean. You are clean, but not all of you."

Greater love has no one than this, that someone lay down his life for his friends.

But you have a custom, that I should release someone to you at the Passover. Therefore do you want me to release to you the King of the Jews?"