So, Matthew turns to Jesus, and says "What's Heaven like?"
And Jesus says "Heaven is like x squared plus three x minus nine".
Matthew isn't sure what to make of this, so he goes to Peter and tells Peter, "I asked Jesus what Heaven was like and he said..."
And Peter interrupts and says "yeah, x squared plus three x minus nine".
"Right, what does that mean?"
"Oh, don't worry about it, it's just another one of his parabolas."