When David wrote this psalm he was on the run from King Saul who was obsessed with killing him. Instead of doubting God for not resolving his plight, he doubles down on his faith and praises God for the Scriptures.
This psalm appears to point to the ideal life of a believer. The main point is this believer’s unafraid response to hearing bad news. The words surrounding this verse sketch for the us the type of believer who trusts God.