Please post where I have ever said I am Jewish? I may have from family studies a very distant great, great, great, grandmother but she is the last of the female line and I am not sure whether she is. I was informed her surnname is Jewish. So no I do not claim to be Jewish at all. But everyone should be treated with respect.
But Jewish people have keep records both oral and written of their lineage and also God promises they will always exist. If they cease to exist then He is not real.
35 This is what the Lord says,
he who appoints the sun
to shine by day,
who decrees the moon and stars
to shine by night,
who stirs up the sea
so that its waves roar—
the Lord Almighty is his name:
36 “Only if these decrees vanish from my sight,”
declares the Lord,
“will Israel ever cease
being a nation before me.”
This is what the Lord says:
37“Only if the heavens above can be measured
and the foundations of the earth below be searched out
will I reject all the descendants of Israel
because of all they have done,”
declares the Lord.
38 “The days are coming,” declares the Lord, “when this city will be rebuilt for me from the Tower of Hananel to the Corner Gate. 39 The measuring line will stretch from there straight to the hill of Gareb and then turn to Goah. 40 The whole valley where dead bodies and ashes are thrown, and all the terraces out to the Kidron Valley on the east as far as the corner of the Horse Gate, will be holy to the Lord. The city will never again be uprooted or demolished.”
God will never reject His people, if He does it means His word cannot be trusted. God can be trusted.