52 Early in the morning on the twenty-fifth day of the ninth month, which is the month of Chislev, in the one hundred forty-eighth year, 53 they rose and offered sacrifice, as the law directs, on the new altar of burnt offering that they had built. 54 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. 55 All the people fell on their faces and worshiped and blessed Heaven, who had prospered them. 56 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. 57 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. 58 There was very great joy among the people, and the disgrace brought by the Gentiles was removed.
The Gemara asks: What is Hanukkah, and why are lights kindled on Hanukkah? The Gemara answers: The Sages taught in Megillat Ta’anit: On the twenty-fifth of Kislev, the days of Hanukkah are eight. One may not eulogize on them and one may not fast on them. What is the reason? When the Greeks entered the Sanctuary they defiled all the oils that were in the Sanctuary by touching them. And when the Hasmonean monarchy overcame them and emerged victorious over them, they searched and found only one cruse of oil that was placed with the seal of the High Priest, undisturbed by the Greeks. And there was sufficient oil there to light the candelabrum for only one day. A miracle occurred and they lit the candelabrum from it eight days. The next year the Sages instituted those days and made them holidays with recitation of hallel and special thanksgiving in prayer and blessings.