Summary of passage: God commissions Isaiah to tell the people whose hearts are hardened in hopes they will repent. Isaiah asks for how long and God replies until the cities are empty.
12) Personal answer. Mine: He is calling me to write novels/books to help others. My response is just as fervent.
13a) Go and preach to the people whose hearts are calloused, ears are dull, and eyes are closed so that they may really see, hear and understand their hearts (which is God’s heart) and turn and be healed. Do this until nothing is left (forever).
b) He expects those who are called to serve Him faithfully always and stay true to His purpose and never stop.
14a) Until the cities lie ruined and without inhabitant, until the houses are left deserted and the fields ruined and ravaged, until the Lord has sent everyone far away and the land is utterly forsaken.
b) A seed is little and becomes something big. God promised Abraham through his seed all nations on Earth will be blessed. The holdy seed was the promise of Jesus. This would encourage Isaiah, knowing the seed would rid the people of their transgressions.
Conclusions: For me, Isaiah is an example of an ordinary guy, called by God to do something and he executed it faithfully until his end. He is encouraging to me as I get very discouraged in my calling on a regular basis and I just try, try again, knowing I’m doing what I believe to be God’s work.