This is a cry of the nation in a time of a cycle of disasters; they prayed earnestly that God would give them victory.
The “bride and Groom” is a picture of God and Israel (often unfaithful), Christ and the Church (waiting to be picked by the Groom); Psalm 45, then, is typological of the greater Davidic King, Jesus Christ.
There’s only one thing required of the bride – worship.
