Taken from 2 Kings 2:23, literally meaning go to heaven, is a phrase used to mock Christians, especially when they're being belligerent. Unlike the story in the bible, the user will generally not get retribution for using this phrase.
church hurt is where you experience a degree of distance, pain, or judgement from your church community. Essentially, you are just unable to “find your place”. This is prevalent in the Christian community, but can be extended to other religions.
Now that I am an adult I am beginning to heal from the church hurt that was inflicted on me as a child.