'Eunuchs' in the Bible

For there are eunuchs who have been born that way from their mother’s womb [making them incapable of consummating a marriage]; and there are eunuchs who have been made eunuchs by men [for royal service]; and there are eunuchs who have made themselves so for the sake of the kingdom of heaven. He who is able to accept this, let him accept it.”