[Gal.5:1]

Rejoice greatly, O daughter of Zion! Shout in triumph, O daughter of Jerusalem! Behold your king is coming to you; He is just and endowed with salvation, humble and mounted on a donkey, even on a colt, the foal of a donkey.

Written by Zechariah, 520 B.C.
Fulfilled completely at the first coming of Jesus Christ (Matthew 21:4-5). Unlike Alexander who came conquering through the sword 200 years later, Jesus the Messiah is just, brings salvation, and is humble.

[Gal.5:1]

Clarification: Alexander...came 200 years after prophecy written by Zechariah, 300 years before Christ.