Meaning of "Under The Mountain" by The Gray Havens

The lyrics of "Under The Mountain" by The Gray Havens can be interpreted as a metaphorical representation of a spiritual journey or the quest for divine enlightenment. The imagery of searching for doors and encountering a gatekeeper suggests the idea of seeking entrance into a higher realm or a deeper understanding of life. The mention of the brightest star shining in a specific place symbolizes the idea of finding true beauty and purpose in the most unexpected of locations. As the narrator is guided by the gatekeeper and witnesses the angelic surroundings, it reflects the feeling of being welcomed into a higher state of being or a sense of spiritual fulfillment. The repeated refrain of "Alleluia, Welcome home" reinforces the idea of finding peace, belonging, and a sense of home in a spiritual or heavenly setting.