You are right, and this is going to have a devastating and direct impact on America (if we haven't already killed ourselves as a nation).
I have begun wearing a Star-of-David along with my cross (on the same silver chain), as a statement of my support and prayers for Israel. It seems to provoke a lot of comments and questions and gives a great opportunity to discuss your very true reminder that "God will watch over Israel and “punish” those who oppose Israel."
RE “...I have begun wearing a Star-of-David along with my cross ...”
We (both Christians and Jews) should always remember we’re one and the same people, ultimately. There would be no Christianity without Judaism.
And we have a common enemy who said “we’re coming for the Saturday people first, then the Sunday people.”