Can Christian of different denomination put aside our differences?

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I used to go to a Presbytian church when I was younger, now am a Catholic. When I was in the Presbytian church, I used to hear some of the member talking about Catholic saying that they are a very different kind of Christian. They have statues, and pray to Mother Mary, which is so call breaking the rules of ten commandment. But after I go through RCIA (Rite of Christian Initiation for Adults) I start to understand what the Catholic are doing. And now I start to think that most other denomination is very narrow in their thinking. They will use words from the bible and say that we are not following what was being taught, but most of the time, they dont really fully understand what was being say in the Bible. I really hope 1 day all the Christian Denomination can put aside our differences and pray together as Christian.