And to the woman were given two wings of a great eagle, that she might fly into the wilderness, into her place, where she is nourished for a time, and times, and half a time, from the face of the serpent. (Revelation 12:14)
In Exodus 19:1-4 God says that He delivered Israel from Egypt on “eagles’ wings”.
In the third month, when the children of Israel were gone forth out of the land of Egypt, the same day came they [into] the wilderness of Sinai. For they were departed from Rephidim, and were come [to] the desert of Sinai, and had pitched in the wilderness; and there Israel camped before the mount. And Moses went up unto God, and the LORD called unto him out of the mountain, saying, Thus shalt thou say to the house of Jacob, and tell the children of Israel; Ye have seen what I did unto the Egyptians, and [how] I bare you on eagles’ wings, and brought you unto myself. (Exodus 19:1-4)
In similar fashion, other passages describe how God will provide a way of escape for His people from Jerusalem.
And the woman fled into the wilderness, where she hath a place prepared of God, that they should feed her there a thousand two hundred [and] threescore days. (Revelation 12:6)
Then shall the LORD go forth, and fight against those nations, as when he fought in the day of battle. And his feet shall stand in that day upon the mount of Olives, which [is] before Jerusalem on the east, and the mount of Olives shall cleave in the midst thereof toward the east and toward the west, [and there shall be] a very great valley; and half of the mountain shall remove toward the north, and half of it toward the south. And ye shall flee [to] the valley of the mountains; for the valley of the mountains shall reach unto Azal: yea, ye shall flee, like as ye fled from before the earthquake in the days of Uzziah king of Judah: and the LORD my God shall come, [and] all the saints with thee. (Zechariah 14:3-5)
We are not sure exactly where this is, but it sounds very much like the instructions Jesus gave to flee to the mountains.
Then let them which are in Judaea flee to the mountains; and let them which are in the midst of it depart out; and let not them that are in the countries enter thereinto. (Luke 21:21)