In the Book of Numbers, chapters 32 and 34, we find a powerful and enduring lesson for Jews living outside the land of Israel. The tribes of Reuben and Gad, later joined by half of the tribe of Manasseh, approached Moses with a bold request. They asked to settle on the east side of the Jordan River, outside the boundaries of the Promised Land, because the land there was suitable for their abundant livestock. Moses was skeptical: was this another rebellion, like the spies who had refused to enter the land decades earlier?

But the tribes made a solemn vow. They would not only join the conquest of the Land of Israel—they would be on the front lines. Only after the land was secured for their brethren would they return to their homes across the Jordan. They could live outside the Promised Land, but they could not abandon their people or their mission.

Fast forward thousands of years, and the question still echoes: Do Jews living in the diaspora bear a similar responsibility toward Israel today?

The modern State of Israel, reborn in 1948, has been under near-constant threat. From surrounding Arab nations launching wars to terrorist regimes like Hamas slaughtering civilians, Israel’s security is never guaranteed. The battlefield has expanded beyond the physical: anti-Israelism masquerades as social justice in Western institutions, and Jewish students face intimidation on campuses from New York to London to Sydney.

And yet, many diaspora Jews seem detached from the fight. Some claim that Israel’s policies are the cause of antisemitism. Others go further, actively criticizing the Jewish State in public forums – leading with “AsAJew” credentials – hoping that distancing themselves will spare them from scorn.

The lesson of Reuben and Gad was clear: you can live outside the land, but not outside the mission.

Reuben and Gad did not ask to be exempt from the battle. In fact, they pledged to be the vanguard. Likewise, Jews living in the diaspora, particularly those in free and prosperous nations, must recognize their role. They may not carry rifles in the IDF, but they must arm themselves with truth, courage, and commitment.

They should defend Israel in public discourse. They must call out antisemitism cloaked as “anti-Zionism,” a calling card demanding the destruction of Israel. They ought to support accurate Israel education, advocate with elected officials, and give generously to causes that strengthen Israel’s security and society. It is the price of living across the river.

Moses demanded a commitment from the tribes outside the land. Jewish history demands one now.