Levi's name is a small, sad hope: "joined" — Leah names her third son believing that finally, with three sons given, "this time will my husband be joined unto me" (Genesis 29:34). It doesn't happen, at least not in the way she means it. But watch where the word "joined" ends up landing generations later, because Levi's whole story is really about what he ends up being joined to instead.
He starts out implicated in exactly the same violence as Simeon. At Shechem, after Dinah's rape, it's Simeon and Levi together who deceive the city and slaughter its men (Genesis 34:25), and it's Simeon and Levi together whom Jacob curses on his deathbed in the same breath: "instruments of cruelty are in their habitations... cursed be their anger, for it was fierce... I will divide them in Jacob, and scatter them in Israel" (Genesis 49:5–7). Read on its own, that's a death sentence for any future the tribe of Levi might have had. No land. No settled inheritance. Scattered.
Here's where you need to slow down, because what happens to that curse over the rest of the Old Testament is one of the more remarkable reversals in all of Scripture. Centuries later, at Sinai, Israel builds and worships a golden calf while Moses is still up the mountain. When Moses comes down and calls out, "Who is on the LORD's side? let him come unto me," it's the sons of Levi who gather to him — and who then carry out judgment against the idolaters at Moses's command (Exodus 32:26–29). Notice what's happening: the same instinct toward violent, decisive action that got Levi cursed at Shechem gets turned, at Sinai, toward zeal for God rather than private vengeance — and Moses's blessing over the tribe afterward treats that zeal as consecration rather than condemnation.
And then watch what happens to the curse itself. Levi still gets no territorial inheritance among the twelve tribes — that part of Jacob's word holds exactly as spoken. But instead of being scattered as punishment, the Levites are scattered by design, deliberately placed in cities within every other tribe's territory, set apart for priestly service: "the LORD is his inheritance, according as the LORD thy God promised him" (Deuteronomy 10:9; see also Numbers 18:20). The very scattering that began as judgment becomes the mechanism of blessing — Levi ends up "joined," after all, not to one husband's affection the way his mother had hoped, but to God himself, present in some form in every corner of the nation rather than confined to one plot of land like everyone else.
This is where the writer of Hebrews will later do serious theological work, tracing the Levitical priesthood all the way back to a much older, stranger priest-king named Melchizedek, who blessed Abraham and received a tithe from him — an argument you've already met if you've studied Abraham's own story — to show that the priesthood running through Levi was never the final or highest word on how humanity approaches God (Hebrews 7). But that's a later argument standing on Levi's shoulders. What Levi's own story teaches on its own terms is simpler and just as important: the same capacity for fierce, uncompromising action that curses you in one moment can, redirected toward the right object, become the very thing you're set apart for in the next.