The Holy Spirit is the power of the church. When He is shelved by unbelieving hearts who remain in the church, the power is off. It is down. Nothing's running beyond our own steam.
When believing hearts secure their confidence in the adequacy of the Holy Spirit, the power is up.
The difference is not based in feared doctrines versus accepted ones. It is found in the God-participation of His established church.
All along we have made up doctrines down through history to stabilize personal theories. To walk out on faith limbs has been and always will be serious tests for believers. Dare we see into the invisible? Shall we possess the land of hope?
When the Holy Spirit of God is present, unexplainable and undefinable life erupts to which our only accurate response can be Glory to God! The Power is up!