God calls Jeremiah to be a prophet to the nation of Judah and warns them if they do not turn from their evil ways they will be destroyed like the nation of Israel. The nation of Judah is contrasted with the heart of Jeremiah. Judah's heart is unfaithful to God, their destruction is looming, and they will be ruled by the Babylonians. Jeremiah has a heart for God, knows a future exodus is coming, and trusts God to rule his future. In His sovereignty, God has a calling for each of us and He promises to accomplish His word.