Luke 11:24 "unclean spirits"

‎Elucidated by Dr. Thomas:—“It is a parable illustrative of the moral condition of the generation of Judah contemporary with Jesus and the apostles. The wickedness of the generation is personified, even as Paul personifies ‘sin’ in Rom. 7:13, as kath huperbolen hamartolos, ‘an exceedingly great sinner.’ Wickedness is ‘an unclean spirit,’ and ‘seven other spirits more wicked than itself,’ is the superlative of wickedness. ‘The man’ and ‘my house’ are expressive of the generation. By the preaching of John, Jesus, and the apostles before the crucifixion, wickedness in the positive degree was greatly restrained in Judah; for ‘Jerusalem and all Judea and all the region round about Jordan were baptized of John in Jordan, confessing their sins,’ and ‘great multitudes of the people followed Jesus:’ but after seven years from the beginning of John’s preaching, reaction set in, and the generation became superlatively wicked, filling up the measure of their fathers in killing Jesus, persecuting the disciples, and rejecting the gospel of the kingdom in his name.”
. Vol. 19: The Christadelphian p 222.