39:1 At that time Merodach-Baladan son of Baladan, king of Babylon, sent letters and a gift to Hezekiah, for he heard that Hezekiah had been ill and had recovered.
54:1 “Shout for joy, O barren one who has not given birth!
Give a joyful shout and cry out, you who have not been in labor!
For the children of the desolate one are more numerous
than the children of the married woman,” says the Lord.