Fortunately in heaven there are no denominations or even any churches so unity will be forced on all those present which shouldn't be difficult since Jesus will correct all the erroneous church teachings and explain spiritual truth to all those present.
Here is a brief description of heaven describing the type of spirituality that will be present:
I did not see a (JEWISH) temple there. The Lord God All-Powerful and the Lamb (JESUS) were their temple.(IN HEAVEN THE INHABITANTS WILL WORSHIP WITH GOD AND JESUS PERSONALLY)
NO CHANCE FOR DIVISION !