'Demon' in the Bible

The multitude answered and said, 'Thou hast a demon, who doth seek to kill thee?'

The Jews, therefore, answered and said to him, 'Do we not say well, that thou art a Samaritan, and hast a demon?'

Jesus answered, 'I have not a demon, but I honour my Father, and ye dishonour me;

The Jews, therefore, said to him, 'Now we have known that thou hast a demon; Abraham did die, and the prophets, and thou dost say, If any one may keep my word, he shall not taste of death -- to the age!

and many of them said, 'He hath a demon, and is mad, why do ye hear him?'

others said, 'These sayings are not those of a demoniac; is a demon able blind men's eyes to open?'