I completely understand what you are saying, and I agree, it was not his "Jewishness" that caused him to be perfect, it was the fact he was God in human flesh, but the fact remains that historically and in Scripture, Jesus completely followed Jewish law, adhered to Jewish holy days and celebrations, and considered himself to be a member of the Jewish community (well maybe a little more than just that :p )
For Jesus to be worthy to justify you, ..for his sacrifice to be accepted, he had to meet the entire criteria demanded by his Father, and this criteria meant keeping it all, doing it all, and staying sinless.
Now a question...., what did Jesus being water baptised do for you?
What did Jesus keeping the Pentecostal holy day do for you?
What did Jesus turning water into wine do for you?
Nothing.
However, he had to prove his Messiahship by "signs", so, he did miracles as the Jews require a sign....and he came for the House of Israel.....1st Corin 1:22, 14:22.
And the reason he was baptised and kept the law perfectly was because this is the Father's criteria which had to be met so that he was accepted and deemed worth to be a sacrifice on our behalf by his Father who set up these incredible standards.
We cant keep the law, but he had to., as that is the requirement for his sacrifice to be accepted by his Father.
Its also interesting that Paul said in Philippians that he was blameless regarding the law, yet in Tim 1:15 he said he is "chief of sinners".
I'm not looking at the effect him being Jewish had on how he acted, cause it may have had little impact, I don't know. But he was Jewish and for whatever reason, I feel he's always been associated with Christianity and Christianity alone, which I do not understand. It does not change who he was and his importance to us, so why is that detail often side-stepped?
He is associated with Christianity because Christianity is not a religion.........
It is an instant and total restoration between God and man that is accomplished by Christ's sacrifice of himself which is accessed by our FAITH.
So, if you take Christ out of Christianity, you have nothing, as he IS Christianity.
Look at the word CHRISTianity.
Look at the word CHRISTmas.
If you take "Christ" out, what do you have left?
And this is completely different then any other theology or man made religion.
Take Buddhism for instance.
If you remove The Buddha, then you still have all the principles of this system that attempt to get you to Nirvana if you follow them all diligently for the rest of your life...so, this is a DO system.
Whereas CHRISTianity,.....Salvation..... is a done system....which is available for free.
Religion, is man striving, based on a man-made mandated theological design/system, to reach God or to become God or Godlike.
Generally this striving is based on dos and donts, tho in some cases its based on the fantasy of soul evolution/reincarnation.
All this has nothing to do with Christ, and it has nothing to do with being eternally restored to the Father as a SINLESS SON, so it has nothing to do with Christianity.