'Pillars of Faith' entails the faith and perseverance one finds when faced with difficulties, challenges and afflictions. The song emphasizes these elements that enable us to overcome challenges and continue on our path. Ffion's mystical vocals on the song are sung as a fictional language, inspired by old Welsh, bringing an ethereal tone to the piece. Ffion's voice can also be heard on film and game soundtracks such as Last Epoch and Homeworld 3.