Please quote a Scripture that says what you are tweeting.
I presume you are referring to the New Covenant -
33 ‘This is the covenant that I will make with the people of Israel
after that time,’ declares the Lord.
‘I will put my law in their minds
and write it on their hearts.
I will be their God,
and they will be my people.
34 No longer will they teach their neighbour,
or say to one another, “Know the Lord,”
because they will all know me,
from the least of them to the greatest,’
declares the Lord.
‘For I will forgive their wickedness
and will remember their sins no more.’
The New Covenant has been in operation since Calvary, & many thousands of Jews from many countries, including priests & Pharisees, did respond to the New Covenant Gospel message, as recorded in Acts. Converted Jews did not cease to be God's redeemed people, they became God's redeemed people & lived with the OC Law in their hearts, like all Christians. Jew & Gentile are one people of God in Christ.
Regarding the continuing shining of the sun & moon, note this -
36 ‘Only if these decrees vanish from my sight,’
declares the Lord,
‘will Israel ever cease
being a nation before me.’
37 This is what the Lord says:
‘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.
Thousands of Israelites believed their Messiah & were baptised in his name. Israel as a
holy nation (Exo. 19, 1 Peter 2) continues to the end of time. In the first century it comprised many thousands of Jews & converted Gentiles as recorded in the NC Scriptures. Millions of Jews & Gentiles have been added since.
The idea that Israel has not existed as a nation for 1900 years is totally against the promises & prophecies of God. But carnal Israel that was established in 1948 exists in continued rebellion against the God of Israel.