Psalm 143 is about being in the deepest blackest pit of despair and finding God anyway. It’s about depression, but the particular depression and anguish you feel when you’re confronted with the consequences of your sin.
Psalm 1 is classified as a “wisdom” psalm. In many ways it functions as an introduction to the book of psalms.
Psalm 27 teaches us that the one desire worth staking our life around is knowing God. Because if we have that, then we have everything worth having.
Psalm 98 is a victory or coronation psalm. It has 3 stanzas: 1-3: praise the Lord as savior; 4-6: praise the Lord as King; 7-9: praise the Lord as judge.
The heavens are telling of the glory of God; And their expanse is declaring the work of His hands.