This weekend, three Republican presidential candidates are slated to appear at a conference in Iowa hosted by homeschooling activist and conservative radio host Kevin Swanson, who, as we have previously reported, has a variety of radical views ranging from defending the death penalty for homosexuality to thinking that Girl Scout cookies and the movie “Frozen” turn girls into lesbians to having a troubling grasp on the science of birth control.

In preparation for this weekend’s event, we’ve been going back to the archives of Swanson’s “Generations Radio” program, which include a 2013 program in which he responded to a Christian listener who objected to his anti-gay rants by calling gay marriage “a death penalty crime from the word of God” and agreeing with his cohost’s assessment that the Bible allows two men to marry if “at the ceremony, you stone them.”

In the May, 2013, program, Swanson read from a letter from a pro-gay-rights Christian listener, calling the letter “outrageous,” “perverted” and “as bad as it gets” and comparing the letter-writer to the Pharisees.

“He’s in support of a death penalty crime from the word of God, he’s in support of homosexual marriage,” Swanson said. “Amazing.”

Swanson lamented that so few Christians were willing to stand up for the Old Testament prohibitions on homosexuality and object to other sins plaguing the nation “because it takes courage and it takes faith to talk to the sick body of our dying carcass of a nation.”

Swanson’s cohost, Dave Buehner, also thought it was amusing that the letter-writer had said that the Bible doesn’t forbid gay marriage, saying, “nowhere does it forbid marrying a giraffe” either.

“Let’s grant him his point,” Buehner said. “A man can marry a man or a man can marry a giraffe and then at the ceremony, you stone them.”

“Okay, all right,” Swanson replied. “So he’s right. This is how bad it gets, my friends.”