The sufficiency of Scripture should not be a statement hidden in a dusty, no-longer-used doctrinal statement. Rather, it’s highly visible in the life of the church. For example, the Bible will be unpacked, explained, and applied from its context in an unrushed and reverent way from the pulpit during the corporate gatherings. In God’s kind of churches, biblical preaching will be more like the main-course of a meal, and less like the parsley garnish. And in preaching, and other teaching ministries, the focus will not be on the teacher, his opinions, and his epic style, but God’s word. The preachers and teachers, from the pulpit to nursery, will demonstrate a getting-out-of-the-way in order for God’s word to take center stage, so as to feed and love you.
Also, a church where women preached or taught at the main service to a mixed, adult congregation would need to be avoided as this would be a church which denies the sufficiency of Scripture (cf. 1 Cor. 14:34-35, 1 Tim. 2:11-12). Furthermore, this kind of a church will justify things like its leadership structure, philosophy of ministry and practice, budget, worship, youth ministry, discipleship, and other events with Scripture, since Scripture alone is our God-given, sufficient authority for church life.
When our churches start here, in word and deed, then many other necessary things will fall into place.