John Wesley on Jeremiah 6:1

Benjamin - Judah, when the ten tribes fell off, the tribe of Benjamin adhered to Judah, and was incorporated into them; if it be asked why the prophet rather speaks to Benjamin than to Judah, the reason probably may be, because he being of Anathoth was of that tribe, and therefore mentions them as his own countrymen. Gather - Gather yourselves together by the sound of the trumpet at Tekoa, one of those fenced cities twelve miles from Jerusalem that Rehoboam built. A sign - Fire a beacon. Beth - haccerem - Signifies the house of the vineyard, probably some high tower built among the vineyards for the keepers of them to watch them.