then I will pluck you up from my land that I have given you, and this house that I have consecrated for my name, I will cast out of my sight, and I will make it a proverb and a byword among all peoples.
That God accepted Solomon's prayer appeared by the fire from heaven. But a prayer may be accepted and yet not answered in the letter of it; and therefore God appeared to him in the night, as he did once before (Ch2 1:7), and after a day of sacrifice too, as then, and gave him a peculiar answer to his prayer. We had the substance of it before, Kg1 9:2-9. I.
Commenting on 2 Chronicles 7:12-22
Then will I pluck them up by the roots out of my land which I have given them; and this house, which I have sanctified for my name, will I cast out of my sight, and will make it [to be] a proverb and a byword among all nations.
Then will I pluck them up by the roots - How completely has this been fulfilled! not only all the branches of the Jewish political tree have been cut off, but the very roots have been plucked up; so that the day of the Lord's anger has left them neither root nor branch.