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

Scofield Reference Notes

[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.

Jamieson-Fausset-Brown Bible Commentary

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).

Matthew Henry's Concise Commentary

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.