...is Old Testament passages prophesying it.
While there aren't any Old Testament passages that specifically say the
messiah will come back to life (that I know of) there are several that
refer to resurrection in general. Isaiah 26:19-21, Daniel 12:1-3, Job
19:25-27, and Ezekiel 37:12-14 are of few of these passages. Jesus is
very clear that the Old Testament promises bodily resurrection in his debates with the Sadducees (who denied resurrection) in Matthew 22:23-32.
Jesus tells us a servant isn't greater than his master (Jn 15:20) and
if the Old Testament says that those who die in God's love will be
raised then it's first necessary for our master to have done the same.
If we could be resurrected apart from Jesus' resurrection then what was
the point of the Word becoming flesh in the first place?
the Old Testament predicts that the dead shall be raised, and Jesus must
be raised first to accomplish this, is yet another reason Catholics
believe in the resurrection of Jesus.