In chapter 26 the land of Judah is described as a place that finds protection in God rather than in walls and fortifications. Isaiah goes on to speak of the peace available to those who trust in God and the destruction of those who reject Him. Verse 15 makes reference to Israel as being a nation restored after having been “removed far unto all the ends of the earth.”
When we get to verse 19 Isaiah is speaking of a time when those who have died as men/women of faith, including himself, will be resurrected to new life. In the very next verse God calls His people to enter into “thy chambers” until the Lord is through punishing the sinful inhabitants of earth. This triggered my thoughts to connect with John 14:1-3, 1Corinthians 15:52, and 1Thessalonians 4:16-17. In John 14 Jesus is telling His disciples that He is going home to the Father to prepare a place for them among His many “mansions.” In 1Corinthians 15 Paul reveals the truth that a time is coming when all people of faith, those alive at the time and those who have already died, will be changed and resurrected respectively to be clothed in their immortal bodies. In his letter to the Thessalonians Paul also clearly states that the “dead in Christ shall rise first: Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.”
Jack Kelley (www.gracethrufaith.com) made another interesting observation. In the phrase “Come my people, enter thou into thy chambers,” the word come includes the idea of vanishing in the Hebrew. There are just too many interesting connections for me not to think there is reference to the rapture here.