Grapes of wrath chapter 13?

1) From the text:

"It's ever'body," he said. "Here's me that used to give all my fight against the devil 'cause I figgered the devil was the enemy. But they's somepin worse'n the devil got hold a the country, an' it ain't gonna let go till it's chopped loose. Ever see one a them Gila monsters take hold, mister? Grabs hold, an' you chop him in two an' his head hangs on. Chop him at the neck an' his head hangs on. Got to take a screw-driver an' pry his head apart to git him loose. An' while he's layin' there, poison is drippin' an' drippin' into the hole he's made with his teeth."

2) The Wilson's allowed Grandpa the comfort of their tent where he passed away.