Dostoievsky is a distillation of the work of the Saints and one of his primary sources for his ouvre was the Philokalia.
"Philokalia" = "love of the beautiful." I gather you're referring to the Philokalia of Russian Orthodox tradition, of which Dostoievsky was certainly aware. Indeed, Alyosha (Brothers Karamazov) very much wants to follow the way of the Philokalia, i.e., to live as a monk consecrated to constant prayer, inside the walls of the monastery; but his Elder, Father Zossima forbade this, and sent Alyosha out into the world....
That "Dostoievsky is a distillation of the work of the Saints" strikes me as very likely true. The Marriage at Cana episode simply emanates goodness, beauty, sanctity....
Thank you so much, 0beron, for your insights!