In one of the biggest social media flaps since social media was invented, Duck Dynasty’s Phil Robertson openly said that homosexuality is sinful. Then the cyber world blew up in a clash of worldviews—the progressive, whatever-floats-your-boat perspective of A&E, the cable network that profits greatly from the Robertsons’ TV show, against the traditional biblical view of sin and sexuality. A lot of people think that Phil’s old-fashioned morality is not only antiquated but unfair. Is it? Is homosexuality a sin? If people are born gay, why would God condemn people for being the way He made them? What kind of God would do that? Let me answer those questions in…