The Lord secures justice for the poor and upholds the cause of the needy

Psalm 140:1-13
I say to the Lord, “You are my God.” Hear, Lord, my cry for mercy.
Sovereign Lord, my strong deliverer, you shield my head in the day of battle.
Do not grant the wicked their desires, Lord; do not let their plans succeed.
I know that the Lord secures justice for the poor and upholds the cause of the needy.
Surely the righteous will praise your name, and the upright will live in your presence.
Save me Lord!
The psalmist is in real trouble from the plotting of violent people, and from their venomous tongues. He prays that God will guard him and punish them, in the confident knowledge that God is for the right and implacably opposed to evil.
Why?
When we are in real trouble, we may pray to the Lord like David. Ask God for help and rescue.
God is my Strong deliverer, God shield my head in the day of battle.
God secures justice for the poor and upholds the cause of the needy. So let my way be justice.
David asked the Lord punish his enemy.
How?
Praise the Lord for God protect the righteous! God is my shield.