The only way which sinners like us can bring right worship (in our prayers & praise) is if we bring it in covenant. Every other attempt is really idolatry, self-worship, and sin. You’ve come to Mt. Zion, not to do God a favor, but because of His favor towards you.
One of the more vital needs of the church is for us to do what we do on purpose. In other words, while there’s a right sort of habitual piety, there’s also a very real threat of putting our worship on spiritless autopilot. We should ask ourselves, “What are we doing here?” And we should have an answer that’s derived from what God, in His Word, told us to do in our gathering.
This is a service of prayer (Acts 2:42) in which God renews His covenant with His people (Heb. 12:22-24). Let me break that into two parts. The reason we assemble is to offer our prayers up to the Lord. True prayer humbles itself before the Living God. As such, it brings praise for Who He is & petitions Him alone for deliverance from evil. Our songs are sung prayers; largely derived from the Psalms or from themes clearly tied to the text of Scripture.