I think the biggest hurdle people have to get over is that Jews only represent one tribe out of twelve in Israel! The reason everyone calls Israelites Jews is because they have separated Israel to only be the Jews as in the New Testament they are frequently referred to as being against Yeshua as He was born a Jew. (John 4:44 For Jesus himself testified, that a prophet hath no honour in his own country.) this He said being a Jew in Judaea. It is of course true that your own family is the hardest to reach! A foreign people welcome the gospel with open arms but your own family thinking they know you don't want to believe your words. This is also the reason Yeshua said when instructing His disciples when preaching the gospel, to the Jew first and then then gentile(meaning the other 11 tribes). God always disciplines His own first then after that the rest and so it is with the gospel to correct His own but His own would not accept Him.
As for inheritance the rabbis "changed" the inheritance rule by citing a chapter from Ezra to "prove"their lie. Chapter 9 where the Israelites were intermarrying with the idolatrous women of nations surrounding them. This of course is an idiotic reason but it is the one they use nonetheless. In Yeshua's genealogy which by extension is also King David's etc there are several non Israelite women one even having a book in God's Word, Ruth. She was a Moabitess and of course her husband Boaz's mother was Rahab the Jericho harlot. It is nonetheless the reason they give for their "Jewishness" and they don't even realise they have bred themselves out of God's promise to Abraham, Isaac and Jacob by doing so. They are no longer physical heirs as only their mothers needed to be Jewish. As you can imagine with each generation that passes their Jewish genes diluted to the point they are no more! They blended with the people of the Khazarian empire who took on Judaism as their religion, Judaism of course being complete idolatry pretending to be of God when in reality they are the continuation of the Babylonian idolatries just as the catholics and the muslims are, the three main religions, the three main idolatries all stemming from Babylon. This is also why the talmud reads almost identical to the koran and the catholic catechism mixing little bits of what looks like the Torah with what is mostly complete idolatry. Bringing the gospel to the land of "Israel" is very difficult to do as the land is ruled by these evil rabbis and they are attacking true believers all over the land physically as well as verbally. They say there is freedom of religion and that is true as ours is not religion, it is relationship and satan wants to prevent that as it is the only danger he faces, a true believer with the knowledge of Yeshua. The true believer is the only true enemy satan has on earth and he will work feverishly to prevent us from preaching God's Word to them knowing it will surely defeat him. He knows he has lost the war but he still fights the battles thinking he can win. Only a true believer will fast and humble themselves and seek God's face and walk in faith where the gates of hell cannot withstand our prayers and proclamations to save those who still need to be taken out of the bondage of sin.