Yavan is the Hebrew name for Greece (and the Greeks), derived from the son of Japheth mentioned in the Table of Nations (Genesis 10:2, 4). The name corresponds to the ancient 'Ionians' — the Greek-speaking peoples of the Aegean world. Yavan appears in prophetic texts as a major player in eschatological history, most significantly in Daniel 8 where a 'he-goat from the west' represents Greece's rapid conquest under Alexander the Great.
The theological significance of Yavan is enormous in biblical prophecy. Daniel 8:5-8 describes a goat representing Yavan (Greece) that charges from the west and destroys the Persian ram — a prophecy fulfilled with remarkable precision by Alexander the Great's campaigns (334-323 BC). Zechariah 9:13 speaks of Zion's sons against Greece's sons. The Greek empire became the vehicle through which the world was prepared for Christ's coming — the Septuagint (Greek OT) and the Greek language itself enabled the spread of the Gospel. God used Yavan's cultural hegemony for redemptive purposes.