When we gather for worship, the Lord wants to meet with us.  His purpose is not seeking worship, but rather He is seeking worshippers.  For every service God has a plan and a purpose.  That means the worship leader, singers, musicians, and all the congregation must function in their priestly relationship with God to hear what the Spirit is saying and make room for that to be expressed in our lives individually and as a congregation.  We wait in His presence until we hear in our hearts His purpose for us.  That may be revealed through song, prayer, exhortation, intercession, or spiritual warfare.  ( Colossians 3:16-17 ).  He is an awesome God and cannot be explored in a few minutes or praised in a moment.  God is a rewarder of those who diligently seek Him ( Hebrews 11:6 )  He is our strength and our portion ( Psalm 73:26 ).

They are to remind us that "we have this treasure (the light and life of Jesus) in earthen vessels that the surpassing greatness of the power may be of God and not ourselves" ( 2 Cor.4:7 ).