Israel is a land, a state and a people. Israel also was a person - Jacob - whose name was changed to Israel when he struggled with the angel. The word YISRAEL in fact MEANS to struggle with God. It implies that the essence of being a Jew, of being “Israel,” is to struggle with certainty. Indeed, Jews ask a lot of questions. We are in relationship with ultimate truth. We seek it, but we rarely accept a truth without vigorous scrutiny. Interestingly, the word Islam, in Arabic, means “submission” or “surrender,” to the will of God. There is undoubtedly a lot of submission in Judaism and questioning in Islam, but the defining characteristic for Jews is of an ongoing struggle with God’s will and life’s purpose. It explains a lot!
Of course, you can also study these on your own - I'll provide links. And even more, find ways to incorporate these values into your life.