Jeremiah 6:1
O ye children of Benjamin, gather yourselves to flee out of the midst of Jerusalem, and blow the trumpet in Tekoa, and set up a sign of fire in Beth-haccerem: for evil appeareth out of the north, and great destruction. O ye children of Benjamin, gather yourselves to flee out of the midst of Jerusalem, and blow the trumpet in Tekoa, and set up a sign of fire in Beth-haccerem: for evil appeareth out of the north, and great destruction.
After the kingdom divided, the southern portion of Benjamin is to be reckoned with Judah rather than with the northern kingdom of Israel. The blowing of the trumpet and the setting up of the sign of fire portray urgent warnings of danger and of approaching destruction. The verse is God's call to His faithful people to flee out of the midst of Jerusalem after the city rejected the light sent through His prophets. The call to come out came because Jerusalem had become full of deceit and had become great and grown rich in its apostasy, while evil and great destruction faced it from the north.
The flight commanded is separation from a doomed city ripe for judgment. The evil and destruction from the north exemplify how enemies coming from the north represent the ungodly forces opposed to God and His people, supporting the symbolic use of northern peoples in Ezekiel's prophecy of the final conflict at the close of the millennium. The same pattern was repeated when rejection of light in the days of Christ and the apostles brought a moral fall that filled Jerusalem again with every evil and brought swift doom upon it. It finds its parallel in the last days, when rejection of Christ and rejection of the law of God as the foundation of His government brings deception and destruction like that which destroyed Jerusalem.