Psalm 45 was written for an actual royal wedding and overflows with unbridled devotion for this earthly king. In those days, royal poets were commissioned to compose lines praising the bride and groom.
Take some time and read this wonderful psalm. Notice how it relates to our king, Jesus Christ. Christ is our bridegroom and a day is coming when his bride, the church, will celebrate its union with him. See Revelation 19: 7
Until that day comes we remain poets and composers in the king's court. We exhaust all that we have to proclaim the glories of Christ. Wouldn't it be marvelous if we could approach our worship gatherings with this kind of motivation?
Charles Wesley, the great hymn writer did just that:
O for a thousand tongues to sing
My great Redeemer’s praise,
The glories of my God and King,
The triumphs of His grace!