We come to worship to proclaim and receive the Gospel

In order for us to think of worship in gospel terms, we need to be careful
not to think only in evangelistic terms. While the gospel includes the good
news of God’s grace for those who would turn to him in faith, the gospel
is not just for outsiders or unbelievers. Great power lies in the line popular
among young Christians today:

We must preach the gospel to our own hearts every day.

This ethic is not just about repeating those portions
of the gospel that lead to new conversions; it is about engaging the power
of the good news that God has provided his grace to save, to sanctify, and
to equip his people for this day, every day, and forever. We need this gospel
to enter Christ’s kingdom, but we also need it to walk with him through
our daily trials and demands. This is the gospel the ancient liturgies teach,
and the best liturgies still echo.

--from new book by Bryan Chapell, Christ-Centered Worship