These military expressions are all suited to the spiritual warrior. Jesus, the great Captain of our salvation, had a personal conflict with Satan, and having been taught of Jehovah how to fight and overcome, he now is conquering him in and by all his members. Hence Christ is our shield, our fortress, our tower; and in his name we conquer: while of Jesus himself, it may and must be said, that what the Father engaged, the Father fully performed, and did beat down all his foes before his face, Psalms 89:20-23.
Related Commentaries of Psalms 144:1
Psalms 144:1-2
1 Blessed be the LORD my strength,a which teacheth my hands to war, and my fingers to fight:
2 My goodness,b and my fortress; my high tower, and my deliverer; my shield, and he in whom I trust; who subdueth my people under me.