Political Zionism was founded by Theodor Herzl — a secular, non-practicing Jewish journalist who had no interest in biblical prophecy. His motivation was entirely political: European antisemitism was intensifying, and he believed Jewish people needed a nation-state of their own for safety and survival. His 1896 book Der Judenstaat (The Jewish State) laid out the vision. God was not in it.
Herzl actually considered multiple locations for this state — including Uganda and Argentina. It was not about a divine return to a promised land. It was about political survival in a hostile Europe. The biblical framing came later, added by others to make the project more palatable — especially to Christian audiences whose support was needed.