Psalm 5 is usually considered to be an "imprecatory" psalm. an imprecatory psalm is one in which the psalmist calls God to bring justice on his enemies. So the psalmist writes, "Make them bear their guilt, O God; let them fall by their own counsels; because of their many transgressions cast them out, for they have rebelled against you" (5:10).
Although the later heading calls this a "psalm of David," the mention of the holy temple in 5:7 suggests that the psalm dates to a time after David.
The psalmist appeals to the righteousness (5:8) and steadfast love of God (5:7). God is not a God who delights in wickedness (5:4). God is a God who listens: "O Lord, in the morning you hear my voice" (5:3).
Psalm 5:9 is quoted in Romans 3:13: "their throats are open graves; they flatter with their tongues." Paul of course uses the verse, along with a string of others, to point to universal sinfulness. In the psalm, however, the psalmist is not talking about everyone but about his enemies.
The good news is that God covers the righteous like a shield (5:12). God protects (5:11). God gives refuge (5:11).
Wisdom now gives a sobering word. While there was a time when wisdom called out, there is also a time when wisdom stops calling. Those who once hated knowledge, who wanted nothing of wisdom's council, they will not find her once they finally come to their senses.
"For waywardness kills the simple,
and the complacency of fools destroys them;
but those who listen to me will be secure
and will live at ease, without dread of disaster." (1:32-33)
Thus ends chapter 1 of Proverbs.
Psalm 1 and Proverbs 1:1-7
Psalm 2 and Proverbs 1:8-14
Psalm 3 and Proverbs 1:15-19