Why Jews never joined Christianity? Why so many died the Masada style (committed suicide) when facing Crusaders’ forceful baptism?
Sometimes Jews survived by being subjected to involuntary baptism, such as in Regensburg, where a crusading mob rounded up the Jewish community, forced them into the Danube, and performed a mass baptism. After the crusaders had left the region these Jews returned to practicing Judaism.
It would be a good practice to try to understand both sides.
Let’s start with the Jew first for he wrote and preserved the Bible. And as Paul says in Romans 1:16 …to the Jew first and also to the Greek. Regardless how much non-Jews try to discredit the Jew and deprive him of this fact, the Jew (from Judah) remains the writer and compiler of the Bible. One can argue that the Ashkenazi Jews have nothing to do with Semites, and that some are Caucasians or Aryans, the fact remains that they are Jews. Judaism is their religion and all are welcome to join. Some Nordic people, like the Vikings, converted to Judaism.
The world sees race first and then intellect. Depriving the Eastern European Jew of Jewishness has much to do with Gentile racism.
God the Father was never conceived, begotten or born; Yeshua was.
[Exodus 13:2] “Sanctify to Me every firstborn, the first offspring of every womb among the sons of Israel, both of man and beast; it belongs to Me.”
[Zechariah 12:10] “I will pour out on the house of David and on the inhabitants of Jerusalem, the Spirit of grace and of supplication, so that they will look on Me whom they have pierced; and they will mourn for Him, as one mourns for an only son, and they will weep bitterly over Him like the bitter weeping over a firstborn.
[Luke 2:7] And she gave birth to her firstborn son; and she wrapped Him in cloths, and laid Him in a manger, because there was no room for them in the inn.
[Romans 8:29] For those whom He foreknew, He also predestined to become conformed to the image of His Son, so that He would be the firstborn among many brethren;
[Colossians 1:15; 18] He is the image of the invisible God, the firstborn of all creation.  He is also head of the body, the church; and He is the beginning, the firstborn from the dead, so that He Himself will come to have first place in everything.
Yeshua depended on the Father thus like mirror reflected the Father.
[John 5:19; 30-31] Therefore Jesus answered and was saying to them, “Truly, truly, I say to you, the Son can do nothing of Himself, unless it is something He sees the Father doing; for whatever the Father does, these things the Son also does in like manner.  “I can do nothing on My own initiative. As I hear, I judge; and My judgment is just, because I do not seek My own will, but the will of Him who sent Me.  “If I alone testify about Myself, My testimony is not true.
The Son can do nothing of Himself… Can do nothing on His own initiative… He depends on the Father.
[Matthew 20:23] He said to them, “My cup you shall drink; but to sit on My right and on My left, this is not Mine to give, but it is for those for whom it has been prepared by My Father.”
[Matthew 24:36] “But of that day and hour no one knows, not even the angels of heaven, nor the Son, but the Father alone.
[Mark 13:32] But of that day or hour no one knows, not even the angels in heaven, nor the Son, but the Father alone.
[John 10:17-18] For this reason the Father loves Me, because I lay down My life so that I may take it again.  No one has taken it away from Me, but I lay it down on My own initiative. I have authority to lay it down, and I have authority to take it up again. This commandment I received from My Father.”
Only the Father knows. The Father ALONE. Jesus received a commandment and obeys it.
[John 14:12] I go to the Father, for the Father is greater than I.
[John 20:17] But go to My brethren and say to them, ‘I ascend to My Father and your Father, and My God and your God.’
We can only be the siblings of Yeshua if He is the Firstborn Son. If the Son is the Father, than the Father is no Father, but only God. If we are not God’s children and siblings of the Firstborn Son then we are strange creatures playing religion only.
Pagan nations make human physical gods attributing to them deity. This is the Gentile psyche which the Jew was forbidden to even entertain.
[Deuteronomy 4:15-16] “So watch yourselves carefully, since you did not see any form on the day the LORD spoke to you at Horeb from the midst of the fire, so that you do not act corruptly and make a graven image for yourselves in the form of any figure, the likeness of male or female.
In Babylon the monotheistic Jewish thought was impaired. Jews (Judah in Babylon and Persia) started to speculate just like the Goys do. Zoroaster, paved the way for Mani and Augustine. This idolatrous spirit of split Universe between light and darkness God and Satan gave the Gnostics plenty food for thought.
600 years of Greek mythology and philosophy further impaired Jewish monotheistic mind. Jews were Hellenized and Christianity inherited dualism, Satan, Hell, devils etc… Like a great Mafia boss the Christian God gives people an offer they can’t refuse, My only Son or Hell. Scared of hell people run to Jesus to be saved from eternal fire.
This new tightly organized religion labels heretics when something new does not fit into the church doctrine.
Jesus as God…
If the Son comes from Himself and goes back to Himself then we have a problem. I only mentioned Trinity because Yeshua said that He does not know when He returns, or who sits were in heaven, etc, He cannot do anything of Himself and that the Father is greater than the Son. Then He told Mary to go to His brothers… His god and our God… His Father and our Father… so there is no Christ God to be worshipped, but God the Spirit (John 4:22-24) alone. The Way to the Father, the Truth from the Father and the Father’s life manifested in the Firstborn Son, so we are His siblings. Then we can overcome as He did (if you care to quote Revelations 3:21). We also attain Eph. 4:13) Mat. 5:48 … the Father makes us perfect as we study the Way – Yeshua and His knowledge of the Father. Yeshua lays His life of HIs own accord (John 10:17-18) He obeys commandment. So, when it comes to the works of power, healing raising the dead, Yeshua completely relies on the Father etc… (so much more to say) but when it comes to loving us He does something on His own as a man, He obeys the Father’s commandment.
Christianity glories in the blood, the cross, nails and thorns as if this is the only way to heaven. If that were so, then repentance is unnecessary. To a Jew this is strange.
[Isaiah 1:11] What are your multiplied sacrifices to Me?” Says the LORD. “I have had enough of burnt offerings of rams And the fat of fed cattle; And I take no pleasure in the blood of bulls, lambs or goats.
To a Christian the torture instrument, cross, is like the ancient Ark of the Covenant was to the Jew.
[Jeremiah 3:15-16] “Then I will give you shepherds after My own heart, who will feed you on knowledge and understanding.  It shall be in those days when you are multiplied and increased in the land,” declares the LORD, “they will no longer say, ‘The ark of the covenant of the LORD.’ And it will not come to mind, nor will they remember it, nor will they miss it, nor will it be made again.