There was oil for one day. Why do we observe eight days of Hanukah when the burning was, for one day, no miracle at all?

1. The first day of the festival commemorates the military victory of the 25^th of Kislev when the Jews rested from battle.
2. The discovery of the jar was, in itself, a miracle.
3. The discovered oil was divided into eight portions to last the eight days for the production of new oil. Miraculously, the minute portions burned all day long.
4. After the menorah was filled with all the available oil, the jar remained full (or variations on that theme).
5. The jar actually absorbed some of the oil so there wasn’t really enough for one full day.
6. The fact that the Jews did not despair and had enough faith to fulfill the commandment to light the light at all was itself a great miracle.