Isaiah 26

From my perspective, after Jesus' resurrection, verse 19 of this chapter is all about the day when all men will be raised. The focus of this verse seems to be on the resurrection of God's faithful. And his blessing of joy and refreshment are promised for those who died in submission to him. I wonder how Isaiah understood this stanza? I wonder how his listeners responded? I wonder what those who transcribed Isaiah's words thought about these claims? I wonder how long it was before a generation understood the connection with resurrection?
Stuart