This Psalm contains a prayer to be used by the people, both now on the behalf of king David, when he was undertaking some great expedition, going forth, as is supposed, against the Ammonites and Syrians, 2Sa 10, or some other potent enemies, and hereafter in like cases.
The church prayeth God to hear and defend the king, Psa_20:1; and for a blessing on all his designs, Psa_20:2-6; and showeth wherein the confidence of some is; but theirs is in God, Psa_20:7-9.
In the day of trouble; in this time of war and danger.
Name of the God of Jacob, i.e. God himself; for names are oft put for persons, as Num_26:53Act_1:15 4:12; and the name of God for God, as Deu_28:58Neh_9:5Psa_44:8,20 Pr 18:10, and oft elsewhere. He calls him the
God of Jacob, or Israel, partly to distinguish him from false gods; and partly as an argument to enforce the prayer, because God had made a league or covenant with Jacob and his posterity, who are called by the name of
Jacob, Psa_147:19,20 Isa 44:2, and whose cause David was now pleading against their enemies.