Here the real narrative of Exodus begins. The history of the Israelites from and after the death of Joseph is entered on. The first point touched is their rapid multiplication. The next their falling under the dominion of a new king.
The third, his mode of action under the circumstances. It is remarkable that the narrative contains no notes of time. How long the increase continued before the new king arose, how long it went on before he noticed it, how long the attempt was made to cheek it by mere severity of labour, we are not told.
Some considerable duration of time is implied, both for the multiplication (verse 7) and for the oppression (verse 11-14); but the narrator is so absorbed in the matters which he has to communicate that the question what time these matters occupied does not seem even to occur to him.
And so it is with the sacred narrative frequently—perhaps we should say, generally. The chronological element is regarded as of slight importance; "A thousand years in the Lord's sight are but as yesterday"—"one day is as a thousand years, and a thousand years as one day."
Where a profane writer would have been to the last degree definite and particular, a sacred writer is constantly vague and indeterminate. We have in the Bible nothing like an exact continuous chronology.
Certain general Chronological ideas may be obtained from the Bible; but in order to construct anything like a complete chronological scheme, frequent reference has to be made to profane writers and monuments, and such a scheme must be mainly dependent on these references.
Archbishop Ussher's dates, inserted into the margin of so many of our Bibles, are the private speculations of an individual on the subject of mundane chronology, and must not be regarded as in any way authoritative.
Their primary basis is profane history; and, though taking into consideration all the Scriptural numbers, they do not consistently follow any single rule with respect to them. Sometimes the authority of the Septuagint, sometimes that of the Hebrew text, is preferred; and the result arrived at is in a high degree uncertain and arbitrary.