Their hit show has earned them top ranking as the most watched reality show in cable history, but it came under fire after Willie's father, Phil, made some controversial comments to GQ Magazine.
In the January issue, Robertson said homosexuality was a sin and put it in the same category as bestiality and promiscuity.
"It seems like, to me, a vagina - as a man - would be more desirable than a man's anus. That's just me. I'm just thinking: There's more there! She's got more to offer. I mean, come on, dudes! You know what I'm saying? But hey, sin: It's not logical, my man. It's just not logical," he's quoted as saying.
Asked what, in his mind, is sinful, Robertson replied: "Start with homosexual behavior and just morph out from there. Bestiality, sleeping around with this woman and that woman and that woman and those men."
Wednesday night marks the end of the fifth season, airing in the wake of the firestorm where the patriarch was first suspended and then reinstated in the show.
Willie Robertson says his father was paraphrasing 1st Corinthians but for his own views: "I believe what the Bible says. You have to read the Bible and make up your own mind. You have to decide and God will ultimately decide that and I, we don't profess to be God and we certainly don't profess to be perfect at all 'cause we have our own sins that we deal with."
His wife Korie adds, "Anybody who knows him, any gay, straight, Black, White, anybody who knows Phil knows that he is about love and his message is about God's love and God's grace and God's forgiveness, ultimately."
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