Must a Jew believe in God

I recently read a sad article on whether or not a Jew must believe in God to be a Jew. The answer was tending toward yes, but the conclusion reached said this: "So, must a Jew believe in God? In a sense, it depends how you define four words: 'must,' 'Jew,' 'believe,' and, of course, 'God.' In short: probably. And probably not" (https://www.myjewishlearning.com/article/must-a-jew-believe-in-god/).

Take notice that the conclusion is related to how one defines words. If any definition can be accepted, then there are no truths in the world. What is unfortunate about this is the uncertainty of a moral foundation, anchor. Compare this with the New Testament in Hebrews 11:6, "And without faith it is impossible to please him, for whoever would draw near to God must believe that he exists and that he rewards those who seek him" (ESV).

In the days of Isaiah, Jeremiah, Ezekiel, et. al, to not believe in God was to have the end result of doing what you (any Israelite) wanted to do, and this ended up contributing to their destruction.

It is no different today. While there are some who think it is intellectually wise to dismiss belief in God, on Judgment Day they won't think that.