“Then those in Judea
To the mountains.”
τότε οἱ ἐν τῇ Ἰουδαίᾳ φευγέτωσαν εἰς τὰ ὄρη,
This is exactly the same, word for word in Mark, chapter 13:14, and in Luke, chapter 21:21. Then those people in Judea (τότε οἱ ἐν τῇ Ἰουδαίᾳ) should flee or escape to the mountains or the hills (φευγέτωσαν εἰς τὰ ὄρη). Head to the hills! Maybe this is a reference to the Jewish revolt in 66-70 CE, when many Jews fled Judea as the Jerusalem Temple was destroyed.