You guys are missing a big point I made in my previous posts.
1. Suffering servant of Isaiah is YHVH.
2. Jesus says he's that suffering servant.
Do you guys study Torah? Tanakh?
I will give you some referances (Isaiah 9:6, Isaiah 43:10, Isaiah 53) There are tons, but what I would suggest for you guys to do is to spend a couple months studying the Tanakh, Then move on to the NT.
I think there's a good Messianic Prophecy Bible coming out soon, it's basically for Messianic Jews but Christians can use it as well, especially those who are confused about what the Tanakh really teaches.
Good Luck.