David addressed the lawless leaders and asked them if their words were just, their decisions legal, their sentences fair, and their silences honest. Were they upholding the law and defending the righteous or twisting the law and benefiting the wicked? He knew the answer, and so do we. When they should have spoken, they were silent, and when they spoke, they ignored God’s law. The problem? They had evil hearts, for they were born in sin just like the rest of us (51:5; Gen. 8:21). However, they made no effort to seek God’s help in controlling that sinful nature but gave in to its evil impulses. It’s because humans are sinners that God established government and law, for without law, society would be in chaos. It’s from the heart that evil words come out of our mouth and evil deeds are done by our hands.
These unjust judges were liars. Their words were like venom that poisoned society instead of like medicine that brought health (Prov. 12:18; 15:4). David compared them to snakes (vv. 4–5) and lions (v. 6), both of which are images of the devil (Gen. 3; 2 Cor. 11:3; 1 Peter 5:8). Like the cobra, they obeyed the charmer only when they got something out of it, but they had a mind of their own. Snakes have no visible ears or internal eardrums, but they do have small bones in the head that conduct sound vibrations. The cobra responds more to the movements of the charmer than to the tune he plays.