Well, this is a puzzle, then, for, if a nation, Israel has had no continuous existence, and could not observe this perpetually; and if a faith community,is He commanding Israel to observe perpetually the foreshadowing, but not the reality which these signs foretold?
Israel was NOT a ‘nation’ when the degree came from Heaven.
Disobedience of the Israelites didn't change the commands or promises of God. The prophesy in Daniel was 490 years to the nation of Israel. There are 7 years of that prophecy left. Those who think the "church" has taken the place of Israel will never understand those prophesies.