My only protection's a cross and a switchblade
But what's the weapon for a few that Martin Luther's faith

from Mr. Muthafuckin eXquire (Ft. Maffew Ragazino) – Mau Mau Lyrics on Rap Genius

He wears a cross, and keeps a knife on him. Martin Luther was a priest who rejected the Catholic Church in the 1500’s, so a person with that kind of faith wouldn’t need the knife.

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