Acts 7:6

This is suitable to be said here also: that God is rich in ways and means to bring us up from hence. For this above all showed the riches of God's resources, that in its very reverses the nation increased, while enslaved, while evil-entreated, and sought to be exterminated. And this is the greatness of the Promise. For had it increased in its own land, it had not been so wonderful. And besides, it was not for a short time, either, that they were in the strange land: but for four hundred years. Hence we learn a great lesson of philosophic endurance: they did not treat them as masters use slaves, but as enemies and tyrants--and he foretold that they should be set in great liberty: for this is the meaning of that expression, "They shall serve Me: and they shall come up hither again"; and with impunity.

For his seed shall be a stranger in a foreign land, and they shall subject them to slavery and mistreat them for four hundred years. It should not be understood as if he said that this seed would be mistreated or subjected to slavery for …

"And God said to him that his descendants would be sojourners in a foreign land." See how many years before the promise was given and its type existed, and there was never a type of sacrifice, never a type of circumcision. But by this he …

And God spake on this wise,.... The Vulgate Latin and Syriac versions read, "and God spake to him", and so does one of Beza's copies; and the Ethiopic version reads it both ways, God "said thus to Abraham", as in Gen 15:

He applies this to those that prosecuted him, and sat in judgment upon him, sharply reproving them for their wickedness, by which they had brought upon themselves the ruin of their place and nation, and then could not bear to hear of it,

And God spake on this wise - In this manner, Gen 15:13-14. His seed - His posterity; his descendants. Should sojourn - This means that they would have a “temporary residence there.” The word is used in opposition to a fixed, permanent home, and is applied to travelers, or foreigners. In a strange land - In the Hebrew Gen 15:13, “Shall be a stranger in a land that is not theirs.” The land of Canaan and the land of Egypt were strange lands to them, though the obvious reference here is to the latter. Should bring them into bondage - Or, would make them slaves, Exo 1:11. And entreat them evil - Would oppress or afflict them. Four hundred years - This is the precise time which is mentioned by Moses, Gen 15:13. Great perplexity has been experienced in explaining this passage, or reconciling it with other statements. In Exo 12:40, it is said that their sojourning in Egypt was 430 years. Josephus (Antiq., book 2, chapter 9, section 1) also says that the time in which they were in Egypt was 400 years; though in another place (Antiq., book 2, chapter 15, section 2) he says that they left Egypt f 430 years after their forefather, Abraham, came to Canaan, but 215 years after Jacob removed to Egypt. Paul also Gal 3:17 says that it was 430 years from the time when the promise was given to Abraham to the time when the Law was given on Mount Sinai. The Samaritan Pentateuch also says Exo 12:40 that the “dwelling of the sons of Israel, and of their fathers, which they dwelt “in the land of Canaan,” and in the land of Egypt, was four hundred and thirty years.” The same is the version of the Septuagint. “A part” of this perplexity is removed by the fact that Stephen and Moses use, in accordance with a very common custom, “round numbers” in speaking of it, and thus speak of 400 years when the literal time was 430. The other perplexities are not so easily removed. […]