Zechariah 2:2-5

2I asked, “Where are you going?” He replied, “To measure Jerusalem in order to determine its width and its length.”

3At this point the angelic messenger who spoke to me went out, and another messenger came to meet him

4and said to him, “Hurry, speak to this young man as follows: ‘Jerusalem will no longer be enclosed by walls because of the multitude of people and animals there.

5But I (the Lord says) will be a wall of fire surrounding Jerusalem and the source of glory in her midst.’”