What is Hanukkah?

And [we thank You] for the miracles, for the redemption, for the mighty deeds, for the saving acts, and for the wonders which You have wrought for our ancestors in those days, at this time—

In the days of Matityahu, the son of Yochanan the High Priest, the Hasmonean and his sons, when the wicked Hellenic government rose up against Your people Israel to make them forget Your Torah and violate the decrees of Your will. But You, in Your abounding mercies, stood by them in the time of their distress. You waged their battles, defended their rights, and avenged the wrong done to them. You delivered the mighty into the hands of the weak, the many into the hands of the few, the impure into the hands of the pure, the wicked into the hands of the righteous, and the wanton sinners into the hands of those who occupy themselves with Your Torah. You made a great and holy name for Yourself in Your world, and effected a great deliverance and redemption for Your people Israel to this very day. Then Your children entered the shrine of Your House, cleansed Your Temple, purified Your Sanctuary, kindled lights in Your holy courtyards, and instituted these eight days of Chanukah to give thanks and praise to Your great Name.

I Maccabees 4:42-58 (translation from the Oxford Standard Revised Edition of the Bible)

He (Judah) chose blameless priests devoted to the law, and they cleansed the sanctuary and removed the defiled stones to an unclean place. They deliberated what to do about the altar of burnt offering, which had been profaned. And they thought it best to tear it down, so that it would not be a lasting shame to them that the Gentiles had defiled it. So they tore down the later, and stored the stones in a convenient place on the temple hill until a prophet should come to tell what to do with them. Then they took unhewn stones, as the law directs, and built a new altar like the former one. They also rebuilt the sanctuary and the interior of the temple, and consecrated the courts. They made new holy vessels, and brought the lamp stand, the altar of incense, and the table into the temple. Then they offered incense on the altar and lit the lamps on the lamp stand, and these gave light in the temple. They placed the bread on the table and hung up the curtains. Thus they finished all the work they had undertaken.

Early in the morning on the twenty-fifth day of the ninth month, which is the month of Kislev, in the one hundred forty-eighth year, they rose and offered sacrifice, as the law directs, on the new altar of burnt offering that they had built. At the very season and on the very day that the Gentiles had profaned it, it was dedicated with songs and harps and lutes and cymbals. All the people fell on their faces and wished and blessed Heaven, who had prospered them. So they celebrated the dedication of the altar for eight days, and joyfully offered burnt offerings; they offered a sacrifice of well-being and a thanksgiving offering. They decorated the front of the temple with golden crowns and small shields; they restored the gates and the chambers for the priests, and fitted them with doors. There was a very great joy among the people, and the disgrace brought by the Gentiles was removed.

II Maccabees 10:1 - 9 (translation from the Oxford Standard Revised Edition of the Bible)

Now Maccabeus and his followers, the Lord leading them on, recovered the temple and the city; they tore down the altars that had been built in the public square by the foreigners and also destroyed the sacred precincts. They purified the sanctuary, and made another altar of sacrifice; then, striking fire out of flint, they offered sacrifices, after a lapse of two years, and they offered incense and lighted lamps and set out the bread of the Presence. When they had done this, they fell prostrate and implored the Lord that they might never again fall into such misfortunes, but that, if they should ever sin, they might be disciplined by him with forbearance and not be handed over to blasphemous and barbarous nations. It happened that on the same day on which the sanctuary had been profaned by the foreigners, the purification of the sanctuary took place, that is, on the twenty-fifth day of the same month, which was Kislev.

They celebrated for eight days with rejoicing, in the manner of the festival of booths, remembering how not long before, during the festival of booths, they had been wandering in the mountains and caves like wild animals. Therefore, carrying ivy-wreathed wands and beautiful branches and also fronds of palm, they offered hymns of thanksgiving to him who had given success to the purifying of his own holy place. They decreed by public edict, ratified by vote, that the whole nation of the Jews should observe these days every year.

Such then was the end of Antiochus, who was called Epiphanes.