Gevurot Meyruach Hakodesh 23:12
Gevurot Meyruach Hakodesh 23:12 TOJB2011
In the boker, the Judeans joined in a kesher and bound themselves with a shevu'ah that none of them would eat or drink until they had carried out their plot of retzichah b'seter of Rav Sha'ul.