By knowing the character of evil spirits we may be alert to their working in people and in organizations. Demons - lead people away from the truth of Jesus Christ.
Demons are full of lies and untruth.
By leading people to hold truth about Jesus Christ in a ridged, uncreative way so that the truth is invalidated. Un-Christlike attitudes or the Holy Spirit is quenched. The Holy Spirit - leads people to a living dynamic relationship with Jesus Christ and anchors them in the word of God. The Holy Spirit will speak the truth in love. Demons - work to bring hatred and schism in the body of Christ.