I cannot "admit" that what Walter Martian says is true because it's not. It's just not. That's me being factual. You saying that I'm being deceptive isn't engaging me in dialogue, it's just flaming and avoiding subjects.
As whom Jesus Christ is: He is the only Begotten Son of God. He is everlasting: without beginning or end. He created this world, was born to a virgin and lived a humble life. He taught His gospel, living perfectly every second. And for that people -- even His own -- rejected Him, tortured and crucified. On the third day He rose from the tomb, taught His disciples more, and ascended into Heaven. He is ONE with the Father, and the Spirit. They're three different persons, but all one God. If you want me to provide any furthers sources on this I can. Post 101-103 already are a bunch of verses talking about His divine Sonship.
Now who he is to me personally: He is my personal Savior. I devote every day to Him, striving to walk in His ways. My first major memory of this was when I was ~5 years old, realize how He alone understood my troubles, and He was my Savior. Both from sin, but also... He's my best friend. My foundation, my pillar, my sanity. Without Him I would literally not be alive physically or spiritually.
Now, if you want me to go and address some of Martian's claims that I don't actually believe, I can, though I don't consider it productive. It's much more efficient to talk about what is rather than constant "no, that's not is, that's not is, etc".