In order to understand all the New Testament, we have to be familiar with the Old Testament also. We find Jesus in much of the OT and some passages seem pretty clear. Again it is evidence for non-Christians. It may be worth noting that most of the OT prophets paid a big price for their prophecies -- some even died for them. But it took Jesus' Spirit to open the mind of his disciples. The Pharisees seemed to have closed minds -- in fact they seemed to be deliberately closed minded when you read those passage yourself.