Ioudaios

Ioudaios is a word that means "Jewish" in the ancient Greek language. It was used a long time ago, when people spoke Greek and lived in places like Greece, Egypt, and Palestine. Back then, being Jewish meant belonging to a special group of people who followed a certain religion called Judaism. This religion taught things like believing in one God and following certain rules and traditions. If you were called ioudaios, it meant that you belonged to this group and followed these beliefs. Nowadays, people still use the word Jewish to describe someone who follows the religion of Judaism, but they don't usually use the word ioudaios anymore, unless they are talking about the ancient times when Greek was more commonly spoken.