1. Because you have not listened (1-14)
For twenty-three years Jeremiah preached the word of God to the people of Judah, but they would not listen. They did not repent, but continued in idolatry and in all kinds of immoral practices. They brought harm on themselves by refusing to accept the word of God and refusing to repent. God sent the Babylonians to invade Judah and take her people as captives into exile. God promised that after 70 years he would punish Babylon and send the exiles home to Jerusalem. God's punishment is redemptive; he wants his people to repent and return and be blessed.
2. The cup of God's wrath (15-38)
The Babylonian Empire would execute God's judgment on many nations--including Judah. Then the cup of God's wrath would be poured out on Babylon. This is a preview of the final judgement. God sent his Son to die to save sinful mankind. But those who do not repent and drink the cup of forgiveness and blessing with Jesus must drink the cup of God's wrath.
Application: Lord, help me and my people to listen to your word and repent.
One Word: Listen and repent