Ezekiel 9:4, “Go throughout the city of Jerusalem,” said the LORD, “and put a mark on the foreheads of the men sighing and groaning over all the abominations committed there.” The word “mark” in this verse is the Hebrew word Tav, the last letter in the Hebrew alphabet. At the time of Ezekiel it would have looked similar to a slanted X with one leg slightly longer. Why was this the letter that was chosen? It was the last letter, the final rescue or salvation was reserved for those who had this mark.