You think he's joking, standard blaspheming, probably won't actually do it - however there's something here being shown to you that you likely missed.

The re-staging of the cruxifiction of Christ, in many instances using children, is one of the most common "programming" rituals (sometimes semi-annually) within bloodlines and TheCult™. It's one of the most well-documented rituals, across survivors, across continents.

Another example of "The Great Revealing", "The Grand Unveiling" whereby that which has been done in secret, will be shown to you, now done in the open - and you are meant to be 'The Fool'.