Psalm 19 is the Psalm of 3 words. First, we hear words about God from the heavens. (v. 1-6) Then we hear words from God found in the law of Scriptures. (v. 7-11) Finally, in response, we speak words back to God. (v. 12-14) It's also been called the book of the three laws: the law of nature, the law of God, and the law of the conscience; each of them teaching us who God is, who we are, and what is required of us.