Reading Isaiah 25 is like a preview of Revelation 21-22. I truly have never realized how many connections are made between these two books.
But this verse (25:9) certainly drove my anticipation for Jesus' return.
It will be said on that day, "Behold, this is our God; we have waited for him, that he might save us. This is the Lord; we have waited for him. Let us be glad and rejoice in his salvation."