Can you tell the difference between a vibrant and desolate city? the prosperity and increase of people can be the most significant variables in the difference.
I felt the Message in Isaiah 55 is about the restoration of Israel. God keeps encouraging Israel to forget its shameful past.
God declares who he is, Lord of hosts—referring to earthly or heavenly armies. Another name of God is described as the Holy One of Israel, Redeemer, and God of all the earth.