Jamieson, Fausset and Brown on Ezekiel 39:9-10

9-10. The burning of the foe's weapons implies that nothing belonging to them should be left to pollute the land. The seven years (seven being the sacred number) spent on this work, implies the completeness of the cleansing, and the people's zeal for purity. How different from the ancient Israelites, who left not merely the arms, but the heathen themselves, to remain among them [Fairbairn], (Jud 1:27, 28; 2:2, 3; Psa 106:34-36). The desolation by Antiochus began in the one hundred and forty-first year of the Seleucidæ. From this date to 148, a period of six years and four months ("2300 days," Da 8:14), when the temple-worship was restored (1 Maccabees 4:52), God vouchsafed many triumphs to His people; from this time to the death of Antiochus, early in 149, a period of seven months, the Jews had rest from Antiochus, and purified their land, and on the twenty-fifth day of the ninth month celebrated the Encænia, or feast of dedication (Joh 10:22) and purification of the temple. The whole period, in round numbers, was seven years. Mattathias was the patriotic Jewish leader, and his third son, Judas, the military commander under whom the Syrian generals were defeated. He retook Jerusalem and purified the temple. Simon and Jonathan, his brothers, succeeded him: the independence of the Jews was secured, and the crown vested in the Asmonean family, in which it continued till Herod the Great.