Summary: No, it really has nothing to do with the present lockdown. Isaiah 27:1-3 and Isaiah 26:19 are prophecies about how God will finally destroy Satan and the incorrigible, and how He will resurrect mankind and restore Israel to be His blesser nation. God promised Abraham. “And in thy seed shall all the nations of the earth be blessed; because thou hast obeyed my voice.” Genesis 22:18.
Discussion: Isaiah 27:1-3 (NKJV), “In that day the LORD with His severe sword, great and strong, Will punish Leviathan the fleeing serpent (a symbol of Satan), Leviathan that twisted serpent; And He will slay the reptile that is in the sea. (The masses of mankind are like the tossing sea). In that day sing to her (Israel), ‘A vineyard (Israel) of red wine! I, the LORD, keep it, I water it every moment; Lest any hurt it, I keep it night and day.’”
Isaiah 27:6 (NKJV), “Those who come He shall cause to take root in Jacob; Israel shall blossom and bud, And fill the face of the world with fruit.”
Isaiah 26 is a prophecy about Christ’s kingdom, about the resurrection and the teaching of righteousness to all mankind, and the final destruction of the incorrigible.
Isaiah 26:1-2 (NKJV), “In that day (1,000 year Millennial day) this song will be sung in the land of Judah (Israel restored): ‘We have a strong city; God will appoint salvation for walls and bulwarks. Open the gates, That the righteous nation which keeps the truth may enter in.”
Isaiah 26:8-9 (NKJV) – “Yes, in the way of Your judgments (against unrighteousness) O LORD, we have waited for You; The desire of our soul is for Your name And for the remembrance of You. With my soul I have desired You in the night (present night time of sin and death), Yes, by my spirit within me I will seek You early (in the dawn of Christ’s restoring, healing reign); For when Your judgments are in the earth, The inhabitants of the world will learn righteousness.” (see Jeremiah 31:33-34).
Isaiah 26:14 (NKJV), “They (the incorrigible) are dead, they will not live (eternally); They are deceased, they will not rise (again from second death). Therefore You have punished and destroyed them, And made all their memory to perish.”
Isaiah 26:19 (NKJV), “Your dead shall live (all mankind will be resurrected John 5:28,29); Together with my dead body they shall arise. Awake and sing, you who dwell in dust; For your dew is like the dew of herbs, And the earth shall cast out the dead.”