There are actually only ever two pastoral problems you will ever encounter. The first is this: persuading those who are under the dominion of sin that they are under the dominion of sin. That's the task of evangelism. And [second], persuading those who are no longer under the dominion of sin that they are no longer under the dominion of sin because they're Christ's.
Sinclair B. FergusonFor worship is, essentially, the reverse of sin. Sin began (and begins) when we succumb to the temptation, "You shall be as gods." We make ourselves the center of the universe and dethrone God. By contrast, worship is giving God his true worth; it is acknowledging Him to be the Lord of all things, and the Lord of everything in our lives. He is, indeed, the Most High God!
Sinclair B. Ferguson