I will come into thy house in the multitude of thy mercy…in thy fear will I worship toward thy holy temple. Psalms 5:7
David is assured that he will worship humbly and reverently in God's house because God's mercy is abundant and steadfast. David's enemies would not worship like David because they were arrogant and bloodthirsty and God has no pleasure in wickedness.
God’s multitude of mercy, love, and grace in his heart is displayed by sending His Son to save the lost sinners and in every spiritual blessing, and in the gift of eternal life. David did not rely on His own merits, strength, and righteousness but trusted in the mercy, grace, and goodness of God in Christ and whatever wicked had to do, whom he had before described, it was David’s resolution to serve the Lord.
If we haven't yet, then it is our turn to decide and make a solid resolution for the Lord as David did. May the Lord help and guide us. Have a Blessed Day!