'Spirits' in the Bible

When evening came, they brought to Him many who were demon-possessed. He drove out the spirits with a word and healed all who were sick,

Summoning His 12 disciples, He gave them authority over unclean spirits, to drive them out and to heal every disease and sickness.

Then off it goes and brings with it seven other spirits more evil than itself, and they enter and settle down there. As a result, that man’s last condition is worse than the first. That’s how it will also be with this evil generation.”