Seventy years - The duration of the Babylonian empire was really a little short of this period. But the 70 years are usually calculated down to the time when the Jews were permitted to return to their country (compare Jeremiah 29:10).

Shall serve the king of Babylon seventy years - As this prophecy was delivered in the fourth year of Jehoiakim, and in the first of Nebuchadnezzar, and began to be accomplished in the same year, (for then Nebuchadnezzar invaded Judea, and took Jerusalem), seventy years from this time will reach down to the first year of Cyrus, when he made his proclamation for the restoration of the Jews, and the rebuilding of Jerusalem. See the note on Isaiah 13:19 (note), where the subject is farther considered in relation to the reign of Nebuchadnezzar, and the city of Babylon.

And this whole land shall be a desolation,.... Not only the city of Jerusalem, but all Judea, without inhabitants, or very few, and shall be uncultivated, and become barren and unfruitful:

and an astonishment; to all other nations, and to all persons that pass through, beholding the desolations of it:

and other nations shall serve the king of Babylon seventy years; both the Jews, and other nations of Egypt, reckoning from the date of this prophecy, the fourth year of Jehoiakim's reign, when Daniel and others were carried captive, Daniel 1:1; to the first year of Cyrus.

The land of Judah shall be made waste and desolate, and these peoples shall serve the king of Babylon for seventy years. The time indicated appertains to both clauses. "This land" is not, with Ng., to be referred to the countries inhabited by all the peoples mentioned in Jeremiah 25:9, but, as in Jeremiah 25:9, to be understood of the land of Judah; and "all these peoples" are those who dwelt around Judah. The meaning is unquestionably, that Judah and the countries of the adjoining peoples shall lie waste, and that Judah and these peoples shall serve the king of Babylon; but the thought is so distributed amongst the parallel members of the verse, that the desolation is predicated of Judah only, the serving only of the peoples - it being necessary to complete each of the parallel members from the other.

The term of seventy years mentioned is not a so-called round number, but a chronologically exact prediction of the duration of Chaldean supremacy over Judah. So the number is understood in 2 Chronicles 36:21-22; so too by the prophet Daniel, when, Daniel 9:2, in the first year of the Median king Darius, he took note of the seventy years which God, according to the prophecy of Jeremiah, would accomplish for the desolation of Jerusalem. The seventy years may be reckoned chronologically. From the 4th year of Jehoiakim, i.e., 606 b.c., till the 1st year of the sole supremacy of Cyrus over Babylon, i.e., 536 b.c., gives a period of 70 years. This number is arrived at by means of the dates given by profane authors as well as those of the historians of Scripture. Nebuchadnezzar reigned 43 years, his son Evil-Merodach 2 years, Neriglissor 4 years, Labrosoarchad (according to Berosus) 9 months, and Naboned 17 years (43 + 2 + 4 + 17 years and 9 months are 66 years and 9 months). Add to this 1 year - that namely which elapsed between the time when Jerusalem was first taken by Nebuchadnezzar, and the death of Nabopolassar and Nebuchadnezzar's accession - add further the 2 years of the reign of Darius the Mede (see on Daniel 6:1), and we have 69 3/4 years. With this the biblical accounts also agree. Of Jehoiakim's reign these give 7 years (from his 4th till his 11th year), for Jehoiachin's 3 months, for the captivity of Jehoiachin in Babylon until the accession of Evil-Merodach 37 years (see 2 Kings 25:27, according to which Evil-Merodach, when he became king, set Jehoiachin at liberty on the 27th day of the 12th months, in the 37th year after he had been carried away). Thus, till the beginning of Evil-Merodach's reign, we would have 44 years and 3 months to reckon, thence till the fall of the Babylonian empire 23 years and 9 months, and 2 years of Darius the Mede, i.e., in all 70 years complete. - But although this number corresponds so exactly with history, it is less its arithmetical value that is of account in Jeremiah; it is rather its symbolical significance as the number of perfection for God's works. This significance lies in the contrast of seven, as the characteristic number for works of God, with ten, the number that marks earthly completeness; and hereby prophecy makes good its distinguishing character as contrasted with soothsaying, or the prediction of contingent matters. The symbolical value of the number comes clearly out in the following verses, where the fall of Babylon is announced to come in seventy years, although it took place two years earlier.

And this whole land shall be a desolation, and an astonishment; and these nations shall serve the king of Babylon seventy years.

[1] seventy years

Cf. Lev 26:33-35 2Chr 36:21 Dan 9:2 The 70 years may be reckoned to begin with the first deportation of Judah to Babylon. 2Ki 24:10-15. B.C. 604 according to the Assyrian Eponym Canon, or B.C. 606 according to Ussher; or from the final deportation 2Ki 25:1-30 2Chr 36:17-20 Jer 39:8-10. B.C. 586 (Assyr. Ep. Canon), or B.C. 588 (Ussher). In the first case the 70 years extend to the decree of Cyrus for the return Ezra 1:1-3 B.C. (Assyr. Ep. Canon), or B.C. 536 (Ussher). In the second case the 70 years terminate B.C. 516 (Assyr.Ep. Canon) with the completion of the temple. The latter is more probable reckoning in the light of Dan 9:25.

11. seventy years-(Jer 27:7). The exact number of years of Sabbaths in four hundred ninety years, the period from Saul to the Babylonian captivity; righteous retribution for their violation of the Sabbath (Le 26:34, 35; 2Ch 36:21). The seventy years probably begin from the fourth year of Jehoiakim, when Jerusalem was first captured, and many captives, as well as the treasures of the temple, were carried away; they end with the first year of Cyrus, who, on taking Babylon, issued an edict for the restoration of the Jews (Ezr 1:1). Daniel's seventy prophetic weeks are based on the seventy years of the captivity (compare Da 9:2, 24).

25:8-14 The fixing of the time during which the Jewish captivity should last, would not only confirm the prophecy, but also comfort the people of God, and encourage faith and prayer. The ruin of Babylon is foretold: the rod will be thrown into the fire when the correcting work is done. When the set time to favour Zion is come, Babylon shall be punished for their iniquity, as other nations have been punished for their sins. Every threatening of the Scripture will certainly be accomplished.