What about intermarriage in Egypt?

A couple of questions came in response to my statement that one of the reasons God moved Israel to Egypt was to prevent further intermarriage there, as Judah had done in Canaan.
Certainly, that does not mean that Gentiles were unwelcome in the nation of faith. In fact, the genealogy of Jesus in the Gospels contains the names of women who were not Jewish: Rahab & Tamar.
The point of remaining distinct was that of spiritual separation from pagans, not to the detriment of the pagans but preserving the purity of faith in the nation.
The point of preserving that pure faith was to have a faith to offer to the pagans!

As to the "mixed company" leaving Egypt in the Exodus, Walter Kaiser comments:

38 The “many other people” (‘ereb rab; KJV, “mixed multitude”; cf. the “swarms” of flies in 8:21 [17 MT], ‘arob ) were composed of Egyptians (some “feared the word of the LORD” in 9:20), perhaps some of the old Semitic population left from the Hyksos era and slaves native to other countries. Some of this group must be part of the “rabble” (ha’sapsup lit., “a collection”) mentioned later in Numbers 11:4. Thus the promise to Abraham in Genesis 12:3, of a blessing to “all peoples on the earth,” received another fulfillment in this swarm of foreigners who were impressed enough by the power of God to leave Egypt with Israel after all the plagues had been performed. Another aspect of God’s display of his power was so that the Egyptians could, if they only would, be evangelized (7:5; 8:10, 19; 9:14, 16, 29-30; 14:4, 18).

Hopes that helps!!