I heard about an aged couple who had to have their old gas boiler replaced. They’d had it for years and it was rather antique, the sort where the pilot light was on all the time but the boiler was not always giving out heat or power. Some Christians are like that: They only have the pilot light of the Holy Spirit in their lives, but when God’s people are filled with the Spirit they begin to fire on all cylinders (if you will forgive me mixing metaphors!).