In this verse, Isaiah portrays how the tomb of the earth would become the womb of the earth.
Sheol was the nether region which housed all human beings who had died. In Greek, its name was Hades. Jesus descended to this region through death that He might be raised from it for the sake of its inhabitants. In the coming of the kingdom of God, all the dead were raised and this lower world exists no more. For an exposition of this truth, see the online book The Biblical Case for Everyone Going to Heaven.
The purpose of this blog is to praise Jesus Christ in terms familiar to those who read the Bible.