Why is it considered bad luck to seat 13 people at a table?

Seating 13 people at a table is considered bad luck due to various superstitions and cultural beliefs, particularly rooted in Western traditions. One of the most famous origins is the Last Supper, where Judas Iscariot, the betrayer of Jesus, was the 13th guest. Additionally, the number 13 is often associated with chaos and misfortune in numerology, which contributes to the belief that having 13 diners can invite bad luck.