When Carla says to Jonathan "What is He (God) going to do, turn me into a pillar of salt?", and Johnathan says "It happened before...", they are making reference to Lot's wife from the book of Genesis in the bible.
A bit hypocritical for Michael Landon to speak about saving a marriage of 25 years when he cheated on his own wife Lynn of 20 years and his mistress got pregnant before his divorce was final.