C. S. Lewis called it the greatest poem in the book of Psalms.

19:1-6 The heavens are declaring the glory of God
If creation overwhelms us and leads us to stand in awe, how much more should we stand in awe of the Creator HImself.

19:2-4 They bear constant testimony to who God is. They speak a language with no words but they speak a language that has no limits or boudaries.

19:4-6 The glory is shown in the sun bursting forth from its chamber. 

19:7-11 God's glory in HIs special revelation of Scripture
The law of the LORD...                 is perfect..                      restoring the soul
This structure is found 6 times in vs. 7-9

19:12-14 In light of God's revelation. The author is in awe of His greatness and glory and  begs for HIs mercy.

The LORD is his rock and redeemer. 

Jesus fulfills the Psalm as He is Creator- John 1:1-3, 10; Col. 1:15-17

Jesus is the Word made flesh- John 1:1, 14

Jesus is our rock- Acts 4:11; Romans 9:33; I Peter 2:4-8

Jesus is our redeemer- Ephesians 1:7; Coloissians 1:13-14