One who travels the forbidden path and pursues forbidden fruit can no longer pray. He can no longer pray at mealtime and he can no longer pray in solitude. He might still mumble a few sentences for a time, but he is no longer praying. His praying is no longer coming from his heart and therefore no longer reaches up into heaven; it is soulless and dead, it dies on his lips and finds no way up. In the bordello people don’t pray, they only curse.
Herman Bavinck. The Christian Family. Kindle 2012 (Pos. 1519)