Absolutely not. Perhaps it’s a mater of definition, but to use the example: Malaysia is a Muslim nation, where Islam is enshrined as the national religion. Israel is the Jewish state. To me a nation is one that is governed by the precepts of the designated religion (which we generally are) to the exclusion of any other. Any any non-member of the prevailing religion is less a citizen and discriminated against. The ultimate arbiter of right and wrong is the clergy. Turkey, for example, is very specifically a secular nation, hence the occasional battles on head scarves in schools. Its army on several occasions has coupe’d to prevent the clergy from taking over the country. It is, however a nation generally populated by Muslims.
In your #23, you say we are not a Christian nation and in your #30 you say we are a predominantly Christian nation.
You don’t see the contradiction?
Israel is a Jewish nation in terms of providing refuge for Jews, but isn't ensconsed in the legal system. There are 14 (15?) official religions, Judaism, Islam, the rest various Christian denominations, Bahai may have been added recently.