During the XII century, the Bogomils movement appeared in Bosnia which spread quickly and was accepted by most, its spread lasted until the XIX century as some claim. Besides firmly resisting many rules of the Christian religion, the Bosnian Bogomils kept a large part of their old Illyrian religion which worshiped nature and its forces. Namely, it is known that the Church of Bosnia didn't have any sacral objects and also that it fought against construction of such objects. Instead they chose places in nature, in the open - according to some they were old pagan sanctuaries.
Besides that the Bogomils were socially and morally conscious. prof. dr. Enver Imamović points out in regards to the remains of Bogomilism among the Bosnians of today a few character traits and behaviours which are an age-old tradition of Bosnia and Herzegovina: courtesy towards the elderly, women and children, sense of justice, patience, knack for business, hospitality and love for their parents.
The holly day Tuesday
The holly day of the Bogomils was not Sunday but Tuesday which is confirmed by a few old beliefs which survived in the minds of the Bosnian people until today. Namely, it is believed that the end of times will take place on Tuesday, which has nothing to do with Islam, also the believed that the most severe punishments in court should be ruled on Tuesdays. In both of these beliefs we find a strong symbolism of Tuesday and the explanation as to why the Bogomils held their prayers on Tuesday - the believers prayed to God in order to amend themselves and also to postpone the end of the world. Also on Tuesday the grandfather (overseer), the priests of the Bogomils, conducted a role of a judge in disputes which certain people had amongst themselves.
Almost all of the holy places in Bosnia and Herzegovina which were used in the past for duas and praying are actually old Bogomil holly places. According to many historians one of the heads of the Bosnian church was Ajvaz-Dedo (grandfather). In his famous work "The history of the Bosnian Bogomils", Salih Jalimam claims that it has been historically confirmed that Ajvaz-grandfather was a Bogomil because of the prayers held in the old Bogomil monastery, and also because of the title grandfather (Did, Djed, Dedo) which was held by the highest ranking Bogomils.
In the north-western part of Bosnia we come across another grandfather called Did Adže (Grandfather Adže) who fully fits the description of a Bogomil leader - he is old, wears white clothes, has a long white beard and black shoes. The memory of him never disappeared but has been transformed in a legend about a ghost who is in charge of scaring the children. But also in this legend Did Adže has a task to scare the children better yet to teach them good manners and teach them to be obedient which clearly shows an authoritative person, like the grandfathers among the Bogomils. Another story is connected to Did Adže, namely he rides a huge rooster, has the ability to teleport and he is extremely wise. Some stories claim that he knows the location for the entrance to the underworld.