The closest representation to infinity that can be experienced spiritually is the Abyss or Void. In dreams as we progress spiritually we can have a sense of limitlessness. For most people, infinity is beyond understanding, so when in dreams we have no sense of boundaries or a realization that we are not separate from anything else, this is a sense of infinity. In dreams, the concept of infinity can make us feel very small and insignificant and occasionally without meaning. Conversely, it can make us appreciate how powerful we really are. Also consult the entries for Abyss and Void.