Give me understand that I may live

Psalm 119:129-144
The unfolding of your words gives light it gives understanding to the simple.
Make your face shine upon your servant and teach me your decrees.
Streams of tears flow from my eyes, for your law is not obeyed.
Though I am lowly and despised, I do not forget your precepts.
Your righteousness is everlasting and your law is true.
Give me understand that I may live.
Why?
God's word is the light to me, but we need God gives me understanding, so I may live.
May God's face shine upon me so that teach me the decrees of the Lord!
With mercy and compassion to those who do not obey God's statues.
Yes, Lord, your righteousness is everlasting and your law is true, it is never shaking. Stand from on your word will not shame.
How?
Dear Lord, please give me understand that I may live and be living water to others.