Gospel-centered Worship

In the book "Give Praise to God" on pages 136-137 it is speaking about expositional preaching and how it needs to be evangelistic. Dever also explains that expositional preaching combined with evangelistic preaching should not be apart from Christ, that sin should be lovingly taught to bring the lost to inheriting salvation, and that we are not trying to win the losts' approval but their souls. What would it look like in our worship to God in the church if everything we did from praying to singing to the preaching of God's Word was gospel-centered?