Israeli have a diverse spectrum of religious denominations. This includes religious, non Orthodox Jews. Dati Leumi (the religious Zionists) are by far the most hawkish. They absolutely believe that the biblical land belongs to the Jewish people. They account for about 15% and are incredibly politically influential.
The Haredim (the ultra-Orthodox) are more complicated, and in general don't want all the promised land (they believe that the state established militarily/politically isn't the "spiritual" state that was promised). But, when it comes to the currently occupied land, they have been shifting right in recent years. They vote in coalition with the nationalist right, and their communities increasingly overlap geographically with settlements.
The Dati Leumi camp isn't as uniform as you portray it. There are many examples (e.g. Avrum Burg, https://en.wikipedia.org/wiki/Avraham_Burg ) do not think Israel should be over the entire historical/biblical region ("Eretz Israel Ha-Shlema").
More examples are:
- Rabbi Yehuda Amital and the Meimad Party
- Rabbi Aharon Lichtenstein
You are confusing politics and religion.