Azal (אצל), or Azel, is a location mentioned in the Book of Zechariah 14:5, in Bibles that use the Hebrew Masoretic Text as the source for this verse. In Bibles that follow the Greek Septuagint (LXX) rendering, depending upon the source manuscript used, Azal is transcribed Jasol (ιασολ, pronounced "Yasol"), Jasod (a corruption of Jasol), or Asael (ασαηλ):
And ye shall flee to the valley of the mountains; for the valley of the mountains shall reach unto Azal: yea, ye shall flee, like as ye fled from before the earthquake in the days of Uzziah king of Judah.
The valley between the hills will be filled in, yes, it will be blocked as far as Jasol, it will be filled in as it was by the earthquake in the days of Uzziah king of Judah,
No written work prior to the late 19th-century definitively identifies what, or where, Azal is or was. Most Bible commentators of the late 19th century considered it to be a place near Jerusalem. Cyril of Alexandria wrote in his commentary on the Book of Zechariah, Chapter 14. that Azal was known to be “a town situated at the far point of the mountain".
In 1850, Palestinian geographer Rabbi Joseph Schwarz claimed that Azal was modern Azaria, situated a half mile southeast of the southernmost peak of the Mount of Olives (then called Mount Corruption).
French Orientalist and archaeologist Charles Simon Clermont-Ganneau, who identified the site of the ancient Canaanite city of Gezer preserving the Mesha Stele's inscriptions claimed that Schwarz was referring to al-Eizariya, the traditional Bethany of New Testament times. However, al-Eizariya lies several kilometers due east of the Mount of Olives, not a half mile southeast of it, as Schwarz claimed.