Chapter 10, Mishna 1 How the sages protected themselves from accidentally drinking in pairs (an even number of cups) which make one vulnerable to attack by evil spirits, demons and witches. The numbers 7, 5, and 3 are so positively charged with blessing that they can protect us from drinking 8, 6, or 4 cups. Never embarrass a rabbi in public. Yosef the demon shares some secrets of the demon world. What to do when you’re unsure how many cups you’ve had. Witches can be more dangerous than demons. Some locations are less dangerous than others when it comes to drinking in pairs.