What does Jeremiah 40:2 mean?

The captain of the guard found Jeremiah and said, 'The Lord your God warned this place about what was coming, and now he's done exactly what he said he would. All this disaster happened because you all turned your backs on him and wouldn't listen.' Jeremiah 40:2 - Modern Text Bible

(Nebuzaradan recognizes that the destruction of Jerusalem happened just as Jeremiah had prophesied, and he attributes it to the people's disobedience.)