Bengal could never be completely integrated into the main stream Aryapattern in all the religious movements she went through . The method and authors of translations of the aryan scriptures were always pioneered by the most unusual and unprdicted sources . The transaltions that we get in Bengalee were sourced mainly from the translations of Upanishads and the Purans translated by Shahzada Darashuko. The Mahabharat of Kashiram Das (which is more popular than other versions) was influenced by Paragal Khan's Mahabharat compesed under the auspices of Hossain Shah , this was a period when practically all the Hindu/Aryan scriptures were translated and in the introduction Hossain shah was even eulogized as an avatar of Krishno, Exaggerations apart, people did not frown as this was very much within the norm of normal behaviour.The trend took its peak when Madhusudan Datta could successfully manipulate the Bengalee sentiment through Meghnad Badh kavya . No bengalee thereafter dared to give the name Bibhisan to their child, Bibhishan is still adored and worshipped in the rest of India whereas he is the icon of treachery in Bengal.
Meghnad or Indrojit is one of the most popular heros in Bengal much more glorified than Ram and Lakshman , The tinge of Mother deities have relgated Ram as a dubitable character for his handling of the Agnipariksha and all bengalees get excited by the anecdeote of Lab and Kush's war against Ram. Ravi Thakur hightened the stature of Chitrangada in Bengali minds and Budhedev BAsu in his Sankranti Kavya reinterpreted the Kurkhestro war, the tradition goes on very reinforced today with Nathabati Anathbot & Katha Amrito Saman.Bengal was never very excited about SrimadBhagavatam(before the Bhakti movement). The version which is in vogue is DEviBhagavatam which most North Indian intellectuals, I have found have never heard about.The Women deities which suited the particular character of rivirine and fertile Bengal shoved aside the heavy domination of male dominance of the Hindu/North Indian deities. The tradition of Aditi and Sujata of the Rgved took two tracks one among the Budhist culture and subsequently into Tantrism , the other the shakta tradition of Bengal (Durga the only fair-complexioned deity was taken from Garwal region after the Sen dynasty settled from Kanauj to Bengal through five Kulin Brahmins and Five Kulin Kyasthas- the upper caste stratum of Bengal) . The other powerful deities like Kali, Manasha and different Chamundas are influences of the local indigenous tradition and very much from the Tantrik tradition which came through the Bajrajana school of Budhism . Even the Bhakti movement of Chaitanya was very quite different in form at least from Madhavacharya and the Bhedavedha school(which is the root school of the Bhakti movement). The mass mobilizatin , the civil disobedience , the conversion to Brahmans of people of any birth , the Shajiya or easy method of worship and the shake in the strict obedience to caste system were some unique aspects of Bengalee version of syncretism . This tradition was carried forward in Lallan and Kabir Movements(BJP sympathisers neither know much about it nor care much since they characterise these saints as 'Muslims'), which are numerically the strongest movement even in present day Bengal countryside. The Later day shakta movement carried forward by Ramprosad and Ramkrishno was also very syncretic in nature as we know it from their works , (Some netter said Ramkrishno never went through Quran, I would humbly request him to go through the biographies of Ramkrishno and a bit more attentive in his life-history). The Islami folksongs sung by the boatmen and peasants of Bengal are unheard of in the rest of the Islami world , they are directly adapted from the Jatak stories and the stories of Krishno and Jashoda ("Ma Aminar kole Rasul dole "- a famous Najrul Song).The famous song of the Boatmen starts with "Bader Bader" to allah and pays obeseince to Kaala(Krishno) and all other prophets and the hindu gods and godesses, (for detail information on this vide Ashim Roy's Syncretic culture of Bengal, Ujan Gang Baia of Hemango Biswas and biographies of lalan and his movements). The distinctness in Bengali religiuos culture is the result of the syncretic influence of the Language and the civilization .