The Lion of Judah is the symbol of the Hebrew tribe of Judah (the Jewish tribe). According to the Torah, the tribe consists of the descendants of Judah, the fourth son of Jacob. The association between Judah and the lion, most likely the Asiatic lion, can first be found in the blessing given by Jacob to his son Judah in the Book of Genesis.
The Lion of Judah is also mentioned in the Book of Revelation, as a term representing Jesus, according to Christian theology. The lion of Judah was also one of the titles of the Ethiopian Emperor Haile Selassie and was depicted on the flag of Ethiopia from 1897-1974. Due to its association with Selassie, it continues to be an important symbol among members of the Rastafari movement.
The biblical Judah (in Hebrew: Yehuda) is the original name of the Tribe of Judah, which is traditionally symbolized by a lion. In Genesis, the patriarch Jacob ("Israel") gave that symbol to his tribe when he refers to his son Judah as a Gur Aryeh גּוּר אַרְיֵה יְהוּדָה, "Young Lion" (Genesis 49:9) when blessing him. In Jewish naming tradition the Hebrew name and the substitute name are often combined as a pair, as in this case. The Lion of Judah was used as a Jewish symbol for many years, and as Jerusalem was the capital of the Kingdom of Judah, in 1950 it was included in the Emblem of Jerusalem.