“For they did not gain possession of the land by their own sword, nor did their own arm save them; but it was Your right hand, Your arm, and the light of Your countenance, because You favored them.” (Psalm 44:3 NKJV)
From a human perspective it is difficult for us to understand that God is the source of all life. Why? Because the world elevates many self-made individuals. Many of these people bask in the glory that is given to them by the world.