In Exodus 8:22 Yahweh says, “And in that day I will set apart the land of Goshen, in which My people dwell that no swarms shall be there, in order that you may know that I am the Lord in the midst of the land.”
Yahweh says that He will become a firmament in the midst of the land, dividing between the land above (Israel) and the land below (Egypt). Yahweh will be a firmament in the land that protects His people from the plagues that strike Egypt.
And this “difference” between God’s people and Pharaoh’s people is literally a “ransom” (8:23)). Yahweh will be a firmament/ransom that protects His people.
This implies that this “division” between Egypt and Israel is already a sort of exaltation. Israel has been seated in the “heavenly places” even while still in Egypt.