How did God move millions of Israelites out of Egypt?
God moved them supernaturally, not by ordinary human means. Although the Israelites walked out, it was a supernatural walk under God's sovereign power. The context describes God somehow moving three to five million Israelites out of Egypt, showing His direct, miraculous intervention on their behalf.
Les explains that the Israelites walked, but it was a supernatural walk. He says he has to think that God just supernaturally, somehow or other, moved those 3, 4, 5 million Israelites out of Egypt. This becomes an analogy for Revelation, where God will sovereignly bring a remnant of Jews out, even while they are not yet believers, under the sovereign thumb of their eternal God, and take them into the wilderness for 3 1/2 years. The parallel continues with Pharaoh sending his army and chariots to destroy Israel as they fled to the Red Sea, just as the Antichrist will pursue Jews fleeing the Jerusalem area.