Jeremiah 18:7 Meaning

5Then the word of the LORD came to me, saying,

6O house of Israel, cannot I do with you as this potter? saith the LORD. Behold, as the clay is in the potter's hand, so are ye in mine hand, O house of Israel.

7At what instant I shall speak concerning a nation, and concerning a kingdom, to pluck up, and to pull down, and to destroy it;

8If that nation, against whom I have pronounced, turn from their evil, I will repent of the evil that I thought to do unto them.

9And at what instant I shall speak concerning a nation, and concerning a kingdom, to build and to plant it;