When God told Moses to lead the people on the next stage of their journey, Moses pleaded for the assurance of God's continued presence.
God's people continue to need God and to know that they need God. Psalm 99 calls for praise of the Lord our God.
The psalm reminds us of the journey through the wilderness--references to Moses and Aaron, the speaking from a pillar of cloud, and how God forgave them and that God had exacted retribution.
This psalm addresses God, as a mighty king and tells what kind of king God is: one who loves justice, establishes equity, and works righteous judgment.