Duration of Joseph and Mary's Stay in Egypt

The duration of the Israelites' stay in Egypt is a subject of biblical and historical discussion, with the primary biblical text, Exodus 12:40, stating, "Now the duration of the Israelites’ stay in Egypt was 430 years" ^[1]. However, interpretations of this verse vary, particularly concerning whether this period refers exclusively to the time spent in Egypt or includes earlier periods of sojourning ^[7].

One perspective, reflected in the Septuagint translation of Exodus 12:40, expands the timeframe to include the sojourning of the children of Israel and their fathers "in the land of Canaan and in the land of Egypt" ^[7]. This interpretation suggests that the 430 years encompass the entire period from Abraham's entry into Canaan and the divine promise concerning his descendants' future sojourn in Egypt, rather than solely the time spent within Egypt's borders ^[7]. According to this view, the actual period of residence in Egypt would be approximately 215 years ^[7].

Historical and chronological calculations often rely on other biblical passages to establish the timeline. For instance, 1 Kings 6:1 states that the building of Solomon's Temple, in his fourth year, occurred 480 years after the Exodus ^[3]. The fourth year of Solomon is estimated to be around 1012 B.C. ^[3]. By adding 480 years (adjusting for partial years), the Exodus is placed around 1491 B.C. ^[3]. This calculation, however, is not universally accepted, with some Egyptologists proposing a later date, around 1300 B.C. ^[3].

Joseph, the son of Jacob, was thirty years old when he stood before Pharaoh and began his work in Egypt ^[10]. He had been in Egypt for thirteen years as a slave and at least three years in prison before this point ^[10]. Jacob, Joseph's father, lived in Egypt for seventeen years after joining Joseph ^[9]. The total age of Jacob was 147 years ^[9]. Joseph himself continued to live in Egypt until his death, and his descendants remained there until the Exodus under Moses and Aaron, which occurred 144 years after Joseph's death ^[8].

The Exodus itself is described as a great deliverance, where the children of Israel were brought out of Egypt "with a mighty hand and with an outstretched arm" (Exodus 12:51; Deuteronomy 26:8; Psalm 114; 136) ^[2]. This event is commonly dated around 1490 B.C. ^[2]. The Israelites were instructed to demand items from the Egyptians as their "pay and reward" for their long slavery, which Josephus interprets as atonement for Egyptian lives and a condition for the Jews' departure ^[5].

The chronology of events leading up to the Exodus is further detailed by Josephus, who notes that a generation between Joseph and Moses was considered to be about 42 or 43 years ^[4]. He also records that the period from the time the Israelites left Egypt until the building of the Temple in Jerusalem by Solomon was 592 years ^[6]. This differs from the 1 Kings 6:1 account of 480 years ^{[3, 6]}.

The precise duration of the Israelites' stay in Egypt is thus subject to different interpretations of biblical texts and historical calculations. While Exodus 12:40 provides a figure of 430 years, the scope of this period—whether it refers solely to the time in Egypt or includes earlier patriarchal sojournings—remains a point of scholarly discussion ^{[1, 7]}.

Sources

Exodus “Exodus 12:40 (BSB) — Now the duration of the Israelites’ stay in Egypt was 430 years.”
Easton's Bible Dictionary “Easton's Bible Dictionary: Exodus — The great deliverance wrought for the children of Isreal when they were brought out of the land of Egypt with "a mighty hand and with an outstretched arm" (Ex 12:51; Deut. 26:8; Ps 114; 136), about B.C. 1490, and four hundred and eighty years (1 Kings 6:1) before the building of Solomon's temple. The time of their sojourning in Egypt was, according to Ex. 12:40, the space of four hundred and thirty years. In the LXX., the words are, "The sojourning of the children of Israel which they sojourned in Egypt and in the land of Canaan was four hundred and thirty y”
Smith's Bible Dictionary “Smith's Bible Dictionary: Exodus, The — of the Israelites from Egypt. the common chronology places the date of this event at B.C. 1491, deriving it in this way:--In (1 Kings 6:1) it is stated that the building of the temple, in the forth year of Solomon, was in the 480th year after the exodus. The fourth year of Solomon was bout B.C. 1012. Add the 480 years (leaving off one years because neither the fourth nor the 480th was a full year), and we have B.C. 1491 as the date of the exodus. This is probably very nearly correct; but many Egyptologists place it at 215 years later,--about B.C. 1300. W”
Project Gutenberg “Flavius Josephus, Against Apion, Introduction, section 54: of the Egyptians. See the note on Antiq. B. III. ch. 8. sect. 9. [24] By way of irony, I suppose. [25] Here we see that Josephus esteemed a generation between Joseph and Moses to be about forty-two or forty-three years; which, if taken between the earlier children, well agrees with the duration of human life in those ages. See Antheat. Rec. Part II. pages 966, 1019, 1020. [26] That is the meaning of Hierosyla in Greek, not in Hebrew.”
Project Gutenberg “Flavius Josephus, Antiquities of the Jews, CHAPTER 16, section 8: them; not lent them, as our English falsely renders them. They were spoils required, not of them, Genesis 15:14; Exodus 3:22; 11:2; Psalm 105:37,] as the same version falsely renders the Hebrew word Exodus 12:35, 36. God had ordered the Jews to demand these as their pay and reward, during their long and bitter slavery in Egypt, as atonements for the lives of the Egyptians, and as the condition of the Jews' departure, and of the Egyptians' deliverance from these terrible judgments, which, had they not now ceased, they had soon be”
Project Gutenberg “Flavius Josephus, Antiquities of the Jews, CHAPTER 9, section 6: the two tribes, proved to be a hundred and thirty years, six months, and ten days.”
Exodus (Presbyterian) “Jamieson, Fausset & Brown on Exodus 12:40: the sojourning of the children of Israel . . . four hundred and thirty years--The Septuagint renders it thus: "The sojourning of the children and of their fathers, which they sojourned in the land of Canaan and in the land of Egypt." These additions are important, for the period of sojourn in Egypt did not exceed two hundred fifteen years; but if we reckon from the time that Abraham entered Canaan and the promise was made in which the sojourn of his posterity in Egypt was announced, this makes up the time to four hundred thirty years.”
Genesis (Methodist/Wesleyan) “Adam Clarke on Genesis 50:22: Joseph dwelt in Egypt - Continued in Egypt after his return from Canaan till his death; he, and his father's house - all the descendants of Israel, till the exodus or departure under the direction of Moses and Aaron, which was one hundred and forty-four years after.”
Genesis (Baptist/Reformed) “John Gill on Genesis 47:27: And Jacob lived in the land of Egypt seventeen years,.... He lived just the same term of years with Joseph in Egypt as he had lived with him in Syria and Canaan, Gen 37:2; about two hours' walk from Fium are now to be seen the ruins of an ancient town, which the Coptics say was inhabited by the patriarch Jacob, and for this cause they name it, yet, Modsellet Jacub, or the tabernacle of Jacob (n), which place is supposed to be in the land of Goshen, see Gen 47:11, so the whole age of Jacob was an hundred forty and seven years; he was one hundred and thirty when he ”
Genesis (Lutheran) “Keil & Delitzsch on Genesis 41:46: Joseph was 30 years old when he stood before Pharaoh, and went out from him and passed through all the land of Egypt, i.e., when he took possession of his office; consequently he had been in Egypt for 13 years as a slave, and at least three years in prison.”

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