Religion in a dream is traditionally read as the search for meaning and for a frame that holds life together. Dream books link it to conscience, belonging and the questions you carry about what matters most.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.