Commentators unanimously agree that the psalmist is making a powerful point: it's impossible to hide from God. While we might use darkness to conceal our actions from others, to God, the darkest night is as bright as midday. Scholars like John Calvin note that we often act as if God can't see our secret sins, showing more fear of human judgment than divine omniscience. This verse serves as a stark reminder that every action is seen by God.