My strength and the horn of my salvation

Psalm 18:1-29
David sang a song for God is worthy of praise
The Lord is my strength, the horn of my salvation.
Horn means strength.
He reached down from on high and took hold of me; he drew me out of deep waters.
They confronted me in the day of my disaster, but the Lord was my support.
To the faithful you show yourself faithful, to the blameless you show yourself blameless, to the pure you show yourself pure, but to the crooked you show yourself shrewd.
You save the humble but bring low those whose eyes are haughty.
The outburst of love and praise, and the cataclysmic(relating to or denoting a violent natural event) terms in which David describes previous desperation.
Why?
God is my strength: with the Lord I have faith so I have strength to face the enemies and troubles. It is the victory of the Lord.
My God is righteousness, he rewards people according to what he has done. David said :"The Lord has dealt with me according to my righteousness."
How?
God is my strength, my horn of salvation. God is worthy of praise.