What does Psalm 7:8 mean?

David acknowledges God's role as the ultimate judge of all people; he appeals to the Lord to judge him. This is not a request to be taken lightly (Matthew 7:1–2). In this case, David knows the terrible accusations of his enemies are entirely false (Psalm 7:1–5). Rather than take revenge himself, he is calling on God to bring consequences to those who have attacked him (Psalm 7:6–7).

David did not claim to be perfect or sinless (Psalm 32:1–5; 51:1). Rather, he placed his life before the Lord as evidence of his uprightness and honesty. He was sensitive to sin and endeavored to avoid it by obeying God's Word. David writes in Psalm 19:9–14: "the fear of the LORD is clean, enduring forever; the rules of the LORD are true, and righteous altogether. More to be desired are they than gold, even much fine gold; sweeter also than honey and drippings of the honeycomb. Moreover, by them is your servant warned; in keeping them there is great reward. Who can discern his errors? Declare me innocent from hidden faults. Keep back your servant also from presumptuous sins; let them not have dominion over me! Then I shall be blameless, and innocent of great transgression. Let the words of my mouth and the meditation of my heart be acceptable in your sight, O LORD, my rock and my redeemer."

In response to David's righteous and honest lifestyle, the Lord said, "I have found in David the son of Jesse a man after my heart, who will do all my will" (Acts 13:22).