Ask me anything Jewish

Ok, if you don’t mind answering these questions: Who do you think Isaiah 53 is about since you don’t believe in Jesus? And Isaiah 7? Also, since there’s no Temple, how do you believe your sins are forgiven? And if David’s dynasty will continue forever, who is the person continuing it in the present? Also, how does someone convert to Judaism? For example, Muslims take a Shahada. What do you take?

I was thinking today there are prophecies in the Old Testament where it says that God will send us his Son Jesus Christ. As a Jew you believe in the word of God, but why do not most believe what the Bible says that Jesus was God’s Son to come to?
It is like you choose to believe in some of it the Old Testament but not all of it. I respect all faiths but I am intrigued how someone decides not to accept all of it. Isaiah 7:14, Micah 5:2 and
Jeremiah 23:5-6.
I studied religious studies and Judaism to and I probably heard of this, but I have forgot.
Please explain this to me if you can. I just thought of this today and remembered this thread and though the original poster might be a good person to enquire about this.

My understanding is that John Hyrcanus (Hasmonean / Maccabean leader and Jewish High Priest of Israel, 2nd century BC) allowed non-Jews to "convert" to get equal political status. This allowed the Idumean Herodians to rise to power by Jesus' time. It occurs to me that just as Jacob impersonated Esau to get the birthright so Esau/Edom/Idumeans impersonate Jacob to in a sense, get it back.
Have you met Jews who say this?

imo u can really interpret those verses how u want, they definitely say that G-d will send the Jews a redeemer but it doesn't name who it will be, we believe they're talking about the Messiah son of David who will come and redeem us from exile but not that they refer to Jesus