What does Psalm 19:11 mean?

David wrote from personal experience as God's servant. He credited the law of God, God's Word, with warning him against danger. God did not give us His Word to deprive us of enjoyment but to keep us from what would harm us. Sin sets a snare for believers but the Scriptures teach us how to avoid its snare.

God warned Israel not to enter into an agreement with the Canaanites and their gods. He knew doing so would snare them into sinning against Him. They would be trapped into serving the Canaanites' false gods (Exodus 23:23–33). However, God's Word offers great reward for obedience. Peace and security are two of those rewards. David wrote in Psalm 119:165: "Great peace have those who love your law; nothing can make them stumble."

Another reward is the crown Paul said awaited him at the end of his life. He wrote that he had fought a good fight, kept the faith, and finished his course, therefore the Lord would grant him "the crown of righteousness" (2 Timothy 4:7–8).