That's on a stack of Bibles, least 2 or 3 Qurans

from Jeezy – It's A Cold World Lyrics on Rap Genius

Meaning

A ritualistic gesture, placing your hand and swearing upon a Bible implies the promiser is bound to his word, as it has been witnessed by god. The stack of Bibles and inclusion of Qurans (the religious text of Islam) symbolizes Jeezy’s intent to really, really keep his promise.

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