Marron was recruited to lead the newly tolerated Protestant community of Paris, a task he accomplished through the French Revolution, several imprisonments, the Napoleonic Wars, the Bourbon Restoration and into the July Monarchy.

[4] After the Edict of Tolerance in 1787 Jean-Paul Rabaut Saint-Étienne recruited Marron to serve as the first pastor of the Protestant community of Paris.

The church moved to 18 rue Dauphine in February, 1790, where Antoine Court de Gébelin, the famous interpreter of the Tarot, had held his meetings.

In 1791, at the behest of Jean Sylvain Bailly, the mayor of Paris, and the Marquis de Lafayette, a recently suppressed church, Saint-Louis-du-Louvre was rented to the Protestants for the annual sum of 16,450 livres.

His tomb is inscribed with 1 Corinthians 15:55, the last passage on which he preached during a career of more than fifty years: O mort, où est ton aiguillon?