Zechariah 2:6 & 7
'Come! Come! Flee from the land of the north,' declares the Lord, 'for I have scattered you to the four winds of heaven,' declares the Lord. 'Come, O Zion! Escape, you who live in the Daughter of Babylon!'
God was telling His people to get out of Babylon because He was going to judge the Babylonians. This was the first horn as we saw in chapter 1 in his second vision and they were judged by the craftsman (the Media-Persian empire) of his third vision. The Jews have been scattered over the entire earth and still are today.