So I'm starting with the Isaiah, and it doesn't look like it's talking about a Messiah at all. I went back to Isaiah 51 and read through to 54, and he's talking about Zion (Israel) in general. Not Jesus, and not a Messiah. He's talking about all the things that Israel has been through: slavery, oppression, rejection, abandonment, and making promises that one day things will be better. This isn't prophecy about Jesus, this is the future of Zion.
These few verses only scratch the surface. Also, the more you read and understand it is clear the entire OT foreshadows Christ.