Jeremiah was a prophet called by God in the 13th year of King Josiah of Judah. He prophesied during a tumultuous time as Judah faced invasion from Babylon. Jeremiah counseled against revolting against Babylon and staying faithful to God, but was rejected. Babylon destroyed Jerusalem in 587 BC, exiling many, fulfilling Jeremiah's warnings. The book captures Jeremiah's struggles to accept his role and messages of a new covenant, God's forgiveness, and discerning true prophecy.