Charles H. Spurgeon on Psalms 20:1

"The name of the God of Jacob defend thee." Hebrew, "set thee in an high place," such as God's name is. Proverbs 18:10. "The righteous runneth into it and is safe," as in a tower of brass, or town of war. By the name of God is meant, Deus nominatissimus, the most renowned God, saith Junias, and "worthy to be praised," as Psalm 18:3; and he is called the God of Jacob here, saith another, first, because Jacob was once in the like distress (Genesis 32:6, 7); secondly, because he prayed to the like purpose (Genesis 35:3); thirdly, because he prevailed with God as a prince; "and there God spake with us" (Hosea 12:4); fourthly, because God of Jacob is the same with "God of Israel," and so the covenant is pleaded. —John Trapp.