Here is the quote:
What if tomorrow someone digs up definitive proof that Jesus had a real, earthly, biological father named Larry, and archaeologists find Larry's tomb and do DNA samples and prove beyond a shadow of a doubt that the virgin birth was really just a bit of mythologizing the Gospel writers threw in to appeal to the followers of the Mithra and Dionysian religious cults that were hugely popular at the time of Jesus, whose gods had virgin births? But what if as you study the origin of the word virgin, you discover that the word virgin in the gospel of Matthew actually comes from the book of Isaiah, and then you find out that in the Hebrew Language at that time, the word virgin could mean several things. And what if you discover that in the first century being "born of a virgin" also referred to a child whose mother became pregnant the first 'time she had intercourse?
"What about Dionysus, the god of wine and fertility who's also known as Bacchus?" I asked. "He's frequently cited as being the product of a virgin birth."
"No, there's no evidence of a virgin birth for Dionysus," Yamauchi said. "As the story goes, Zeus, disguised as a human, fell in love with the princess Semele, the daughter of Cadmus, and she became pregnant. Hera, who was Zeus's queen, arranged to have her burned to a crisp, but Zeus rescued the fetus and sewed him into his own thigh until Dionysus was born. So this is not a virgin birth in any sense."[1]
[1] Lee Strobel, The Case for the Real Jesus (Grand Rapids, MI: Zondervan Publishing House, 2007), 180.