...is the prophesies he fulfills and proclaims.
The Old Testament is full of prophesies about
the coming messiah. Some of them seem pretty tough to fulfill; for
example he is to be born in Bethlehem, he must come out of Egypt, and be
from Nazareth.We see Christ satisfy all of these long before he was old
enough to know those prophesies existed (were
he merely human). Christ also made several predictions that came true,
from knowing the death he was going to die to predicting the
destruction of the temple in Jerusalem (which happened in 70 AD).
That Jesus satisfied ancient prophesies beyond his human control and
made many accurate prophesies while alive is yet another reason
Catholics believe Jesus is the one God sent to save us.