{By the prophet} (dia tou proph(8874)ou). The first line is
from  Isa 62:11 , the rest from  Zec 9:9 . John ( Joh 12:14f. )
makes it clear that Jesus did not quote the passage himself. In
Matthew it is not so plain, but probably it is his own comment
about the incident. It is not Christ's intention to fulfil the
prophecy, simply that his conduct did fulfil it.