Whenever Jesus comes around, joy comes. That's the NT picture of this word. It's centered around and based upon the presence of Jesus Christ. So the early believers, as they regularly spend time together in worship and praise, a corporate encounter with Jesus, experience boundless joy. That's what happens when Jesus is claimed as the greatest Treasure of all.
Worship is like plugging into a current that's always on.
It enables me to gaze at the unseen, at the eternal. And in that, something happens in my heart that doesn't happen when I'm not worshiping. How the early believers live out this central value of worship. Paul and Silas, leaders of the Church, have been thrown into jail for healing a demon-possessed woman. This is so characteristic of the early believers.