Are we born to cheat? Is lust a natural desire or a form of adultery? In part one of ABC Nightline’s ‘Ten Commandments’ series, the hot topic of adultery is openly debated between four panelists: Pastor Ed Young of Fellowship Church in Dallas, Jonathan Daugherty of Be Broken Ministries, Noel Biderman, CEO of adultery-advocating website ashleymadison.com, and Jenny Block, author of “Open: Love, Sex, and Life in an Open Marriage.”

The ‘Thou Shalt Not Commit Adultery’ episode airs tonight at 11:35pm EST/PST and is moderated by co-anchor Cynthia McFadden. Future episodes include ‘Remember to Keep the Sabbath Holy,’ ‘There is Only One God,’ and ‘Thou Shat Not Kill.’ Get a sneak peek of tonight’s episode below as the panelists debate lust vs. adultery:

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• Quiz: Are You Lustful?
• Complete Coverage of ‘Ten Commandments’