From Rameses to Succoth - Rameses appears to have been another name for Goshen, though it is probable that there might have been a chief city or village in that land, where the children of Israel rendezvoused previously to their departure, called Rameses. As the term Succoth signifies booths or tents, it is probable that this place was so named from its being the place of the first encampment of the Israelites.

Six hundred thousand - That is, There was this number of effective men, twenty years old and upwards, who were able to go out to war. But this was not the whole number, and therefore the sacred writer says they were about 600,000; for when the numbers were taken about thirteen months after this they were found to be six hundred and three thousand five hundred and fifty, without reckoning those under twenty years of age, or any of the tribe of Levi; see Numbers 1:45, Numbers 1:46. But besides those on foot, or footmen, there were no doubt many old and comparatively infirm persons, who rode on camels, horses, or asses, besides the immense number of women and children, which must have been at least three to one of the others; and the mixed multitude, Exodus 12:38, probably of refugees in Egypt, who came to sojourn there, because of the dearth which had obliged them to emigrate from their own countries; and who now, seeing that the hand of Jehovah was against the Egyptians and with the Israelites, availed themselves of the general consternation, and took their leave of Egypt, choosing Israel's God for their portion, and his people for their companions. Such a company moving at once, and emigrating from their own country, the world never before nor since witnessed; no doubt upwards of two millions of souls, besides their flocks and herds, even very much cattle; and what but the mere providence of God could support such a multitude, and in the wilderness, too, where to this day the necessaries of life are not to be found?

Suppose we take them at a rough calculation thus, two millions will be found too small a number.

Effective men, 20 years old and upward 600,000 Two-thirds of whom we may suppose were married, in which case their wives would amount to 400,000 These, on an average, might have 5 children under 20 years of age, an estimate which falls considerably short of the number of children each family must have averaged in order to produce from 75 persons, in A. M. 2298, upwards of 600,000 effective men in A. M. 2494, a period of only 196 years 2,000,000 The Levites, who probably were not included among the effective men 45,000 Their wives 33,000 Their children 165,000 The mixed multitude probably not less than 20,000 ____________________________________________ __________ Total 3,263,000

Besides a multitude of old and infirm persons who would be obliged to ride on camels and asses, etc., and who must, from the proportion that such bear to the young and healthy, amount to many thousands more! Exclude even the Levites and their families, and upwards of three millions will be left.

"In Numbers 3:39 the male Levites, aged one month and upwards, are reckoned 22,000, perhaps the females did not much exceed this number, say 23,000, and 500 children, under one month, will make 45,500." - Anon.

Had not Moses the fullest proof of his Divine mission, he never could have put himself at the head of such an immense concourse of people, who, without the most especial and effective providence, must all have perished for lack of food. This single circumstance, unconnected with all others, is an ample demonstration of the Divine mission of Moses, and of the authenticity and Divine inspiration of the Pentateuch. To suppose that an impostor, or one pretending only to a Divine call, could have ventured to place himself at the head of such an immense body of people, to lead them through a trackless wilderness, utterly unprovided for such a journey, to a land as yet in the possession of several powerful nations whom they must expel before they could possess the country, would have implied such an extreme of madness and folly as has never been witnessed in an individual, and such a blind credulity in the multitude as is unparalleled in the annals of mankind! The succeeding stupendous events proved that Moses had the authority of God to do what he did; and the people had at least such a general conviction that he had this authority, that they implicitly followed his directions, and received their law from his mouth.

thrust

Exodus 12:33 And the Egyptians were urgent on the people, that they might send them out of the land in haste; for they said, We be all dead men.

Exodus 6:1 Then the LORD said to Moses, Now shall you see what I will do to Pharaoh: for with a strong hand shall he let them go...

Exodus 11:1 And the LORD said to Moses, Yet will I bring one plague more on Pharaoh, and on Egypt; afterwards he will let you go hence...

The Blood
Now, at the time of which this Book of Exodus speaks, Egypt was exposed to a terrible peril. Jehovah himself was about to march through the streets of all the cities of Egypt. It was not merely a destroying angel, but Jehovah himself; for thus it is written, "I will pass through the land of Egypt this night, and will smite all the first-born in the land of Egypt, both man and beast." No one less than I AM, the great God, had vowed to "cut Rahab" with the sword of vengeance. Tremble, ye inhabitants …
Charles Haddon Spurgeon—Spurgeon's Sermons Volume 5: 1859

Appendix xii. The Baptism of Proselytes
ONLY those who have made study of it can have any idea how large, and sometimes bewildering, is the literature on the subject of Jewish Proselytes and their Baptism. Our present remarks will be confined to the Baptism of Proselytes. 1. Generally, as regards proselytes (Gerim) we have to distinguish between the Ger ha-Shaar (proselyte of the gate) and Ger Toshabh (sojourner,' settled among Israel), and again the Ger hatstsedeq (proselyte of righteousness) and Ger habberith (proselyte of the covenant). …
Alfred Edersheim—The Life and Times of Jesus the Messiah

Hope for the Heathen
Throughout his ministry Isaiah bore a plain testimony concerning God's purpose for the heathen. Other prophets had made mention of the divine plan, but their language was not always understood. To Isaiah it was given to make very plain to Judah the truth that among the Israel of God were to be numbered many who were not descendants of Abraham after the flesh. This teaching was not in harmony with the theology of his age, yet he fearlessly proclaimed the messages given him of God and brought hope …
Ellen Gould White—The Story of Prophets and Kings