Then Judas and his brothers and all the assembly of Israel determined that every year at that season the days of dedication of the altar should be observed with joy and gladness for eight days, beginning with the twenty-fifth day of the month of Chislev.

1 Maccabees 4:59

red line embellished
Image: “8th Night of Chanukkah in Meah Shearim,” Andrew Ratto, CC BY 2.0, via Wikimedia Commons