The Bible is God’s revelation to us in completion, perfection, and absolute authority. It addresses every issue that the believer needs to deal with in their Christian Life.It also addresses issues that we in our own wisdom might not choose to deal with. Therefore consistent, verse by verse, expository teaching and application of what God has said in His Word should be our standard approach to teaching. This living Word is the primary means of our knowing and worshiping Him in truth.
This does not discount the value of "series" type preaching/teaching (which should still, in fact, be expository in nature), but systematic verse by verse exposition of God's Word should be our standard approach.
In all things within Church life, God's Word is to be the first and the final authority, being the basis for all decision making. It should be expected that the world's approach to decision making and leadership will often be different to God's revealed approach, and God's approach must always be accepted, no matter how difficult or counter-cultural it is.
2 Timothy 3:16, 17; Hebrews 4:12; John 17:16-17; 1 Cor 1:20