Albert Barnes Commentary Psalms 45:15

"With gladness and rejoicing shall they be led: They shall enter into the king`s palace." — Psalms 45:15 (ASV)

With gladness and rejoicing shall they be brought - They shall come forth, attending the bride, with music and songs; the procession will be one of hilarity and joy.

They shall enter into the king’s palace - That is, moving from the palace of the royal father of the bride, or from her home, they will enter the palace of her husband, her future home. If this is designed to refer to the church, it is a beautiful description of what will occur when the redeemed church shall enter heaven—the home, the palace, the glorious abode of the great King its Saviour—and of the joy that will attend its triumphant admission into those everlasting abodes. Compare the notes at Revelation 21.