It is like when the baby speaks first time in his/her life they call to his/her mother ,as their affection with mother is too much they love mother then why not we treat Vande Mataram or Jana Gana Mana as our national pride and keep our religious differences comes later then the national interest.
As Vande Mataram and Jan Gan Man has to come from our heart and it will come if one is true Patriotic.