Flee from Jerusalem! That ws the warning given by Jeremiah because the invasion of the enemy was imminent.

After the people abandoned their faith they considered the city the safest and most indestructible place in the nation (Prov. 1.29-32).

It is amazing how perspectives and vision change when one is spiritually ill. Only Jeremiah saw the future from a Divine angle. The practice of faith constantly searches the spiritual senses, to live and understand according to the Most High.