Who knows seventy-eight?
Please cite/link your sources, if possible. At some point in the next few days, I will:
Upvote all interesting answers.
Accept the best answer.
Go on to the next number.
According to Rabbi Meir, witnesses who testify that someone gets malkos and becomes an eid zomem get 78 malkos: 39 for kaasher zamam and 39 for lo taane. (makkos 4a) (although the lashon there is 'shmonim')
78 are the Jews who were killed by Arab rioters while on their way to bring supplies to Hadassah Hospital (a Jewish enclave in the middle of hostile territory) during the Israeli War of Independence.
(Though apparently according to the Wikipedia page, the number is now known to be 79.)
Both halves of that sentence contain a word with Gematria 78.
The Talmud considers it an important verse as it says that G-d provides for all living things; analogous to "Poseach es yadecha" in Ashrei (Psalm 145); in fact, if not for Ashrei's added quality of being alphabetical, Psalm 136 would have more of a starring role in our liturgy. Though this verse does make it into Birkas HaMazon.
And lastly, how could I leave out the comment from one student regarding the seminary cook, who was trying to stretch his ingredients?