Bede

And the children of Israel returned, etc. It is of proper order that the teachers of truth first expel from the hearts of their hearers every unclean spirit by exhaling and catechizing, and thus, those who had been the camps of demons, but now made the spiritual possession of Israel, incorporate them into the company of the strong by imbibing them with the salutary sacraments of the saints.

Commentary on Samuel ↗