The third symbolic act was Jeremiah’ letter to the Jews in Babylonia
Jeremiah wrote to the people of Judah a letter of encouragement while in exile. They were to settle down, build houses, marry and have children, live in peace with the Babylonians. They were to pray for the welfare of their masters and to ignore false prophets who lied to them about the safety of Jerusalem and a quick return. God would restore them back to their land after 70 years of exile were over. The exiles were to trust in God and not give up (Jer.29).
Jeremiah 29 New International Version (NIV)