The oil was found in a small pitcher compared to the one required for eight days when new pure oil will be available. So, do not demean a small pitcher because by Chanukah it will be required. That is what Yaakov Avinu symbolized. It also teaches us to fight the yetzer hara who wants to discourage us from using it saying, what is the use when it will not be enough. We never know when a neis will happen.
Also when fighting the yetzer hara (satan), according to the Shlah Hakadosh, ???? ?? he converted the ??, which is no good because it indicates a ?? ?????, clenched fist and ?? ????? and a open mouth, to ?? a ?? ?????, a closed mouth and a ?? ????? and an open hand.
???? ?? ?????? ????? ???? ??? ????? says the Rav Chida that ???? has the same letters as ????? with a ?? in the middle.
