This situation continued with Huguenots thriving in their own communities until the 1630's when rebels in their ranks threatened this established balance. It was at this point in time we see a strong shift towards suppression to quell any rebellions before they would gain any impetus. We are told of Cardinal Richelieu bringing down the walls of such towns. Louis XIII was generally not bothered or threatened to any great extent by dissent due to religion. I would say that this is largely due to his tolerance and enforcement of the Edict of Nantes.
Louis XIV however, was a totally different monarch as is exemplified by an extract from his memoirs quoted in Kekewich (Princes and Peoples: France and the British Isles 1620 - 1714 - An Anthology) " to gradually reduce the number of Huguenots in my realm." This gives an idea of his ultimate goal - removal of any non Catholics. In his own way Louis XIV was quite zealous in his approach to Catholicism. He would have considered himself a Christian. This belief would not stop him using religion for political result or security. We are told by Saint-Simon in Kekewich's Anthology of Sources that "The profound ignorance in which the king had been educated and kept all his life, rendered him from the first an easy prey to the Jesuits." He goes on to say "Religion became his weak point", these observations and opinions give us an idea that political victories could be won by using the King's faith, which, we are told in this same source, became more devout.
The Revocation of the Edict of Nantes in 1685 was the culmination of increasing restrictions imposed upon the Huguenots over the preceding years, making it very awkward for them to continue to live in a normal manner. The terms of the Revocation itself were quite harsh, particularly towards Protestant clergy. They were given fifteen days from publication of the document to leave the kingdom or convert to Catholicism.