I AM the Law
In the Sylvester Stallone movie, Judge Dredd, the police are given the power to act as judge, jury and executioner. The overarching theme is that one individual man should not possess all the powers of the Law.
For the LORD is our judge; the LORD is our lawgiver;
the LORD is our king; he will save us.
In Isaiah 33:22, Isaiah the prophet, reinforces the fact that God is the Law-Giver. This builds into us this confidence: God will judge us rightly. His judgments are not true because He is judge alone, nor king. His judgments are true because He “laid down the Law.” God is the one who gave the Law through Moses.
God wants us to know that He is the Law-Giver and because of that He will treat us mercifully. The Law-Giver He is just when He judges, fair as he leads us and lovingly saves us. Our Law-Giver sent His only Son, Jesus, so that He would be judged on our behalf. We now have a Savior to bring us mercy!