They have heard Isaiah's prayer of gratitude for their deliverance. He now tells them that the Lord will make for all peoples a banquet.
Two things are important about this banquet. First, it really is a banquet. The menu includes rich food and fine wines. Second, it's not just for them; it's a feast for all peoples.
This banquet takes the place of the negative force that death has held over them, swallows it up forever. Walter Brueggemann reminds us of NT allusions to this promise in 1 Corinthians 15:54 and Revelation 21:4 (Isaiah 1-39, WestminsterJohnKnoxPress).
Lectio Divina: Isaiah 25:9