Psalms 20:1
1May the LORD answer you in the day of trouble. May the name of the God of Jacob set you up on high,
Wesley: God of Jacob—God had made a covenant with Jacob and his posterity. The opening blessing asks answer and protection under that covenant name.
Trouble is no pretense, and so is the call to seek the LORD’s answer. Shared piety—the name of the God of Jacob is a covenant refuge, not a charm. Grace invites the people to pray for their anointed; the day of trouble does not undo the duty or the hope of being heard.
Calvin: the Spirit puts the people to praying that God would answer the king, and thereby admonishes kings to implore God’s protection in all their affairs. “Day of trouble” shows they will not be exempt from dangers. The name of God is put for God himself—confidence proceeds from his revealed grace and power. Under the temporal kingdom a far more excellent government is described; as Christ never ceases to intercede, the Church unites its prayer with him.
The covenant name of the God of Jacob is the king’s protection. Head and body stay joined in petition; the God of Jacob guards the kingdom he founded.