The Torah details curses, of tragedy and atrocities, that occur when the Jewish nation strays from its course of bettering mankind. One of them stands out:
וְכָשְׁלוּ אִישׁ בְּאָחִיו – Each man will stumble over his brother (26:37)
The literal translation is incorrect. Rashi explains that this curse is the inverse of the famous maxim of כל ישראל ערבין זה לזה – all of Israel are accountable for one another. The curse is that Jews will stumble over other Jews sins.
The Maharal explains why the literal meaning is incorrect. Tripping over someone has nothing to do with brotherhood. When the Torah says וְכָשְׁלוּ אִישׁ בְּאָחִיו – the tripping is because of the brotherhood – the tripping is over the accountability that brotherhood engenders.
The root of the word ערבין is the word ערב – meaning mixture – it is the same root as the word for tasty, evening, guarantor, Arab and eruv. R’ Ezra Hartman explains that these are all mixtures; An eruv mixes property rights; tasty is the cuisine that “mixes” when digested; evening is twilight, in contrast to בקר which means “differentiate”, in twilight things are hard to make out. The name for ערבי – Arab, is a mixture too. The pasuk in Bereishis says of Yishmael, their ancestor, that יָדוֹ בַכֹּל וְיַד כֹּל בו – his hand will be upon all, and everyone’s hand upon him (16:12). Today, we see this as terrorism. Terrorism has no borders – it is potentially everywhere, in a school, a mall, a bus, a train or a plane.
Rashi saw fit to quote that the solution is כל ישראל ערבין – the nation is a unit, a brotherhood, with components accountable for one another – the Torah assures us that we will stumble on our brother’s problems it if we do not help them.
For that reason alone, we have to help them.