Education on sustainable development and environmental awareness is becoming increasingly important with the current climate emergency. This type of education extends across all school subjects and texts of various kinds are shown to be able to help students gain new insights about the world and themselves. This essay analyzes the eco-theological and ecocritical themes found in Sheila Heti’s novel Pure Color, which was published in 2022. Furthermore, this essay illustrates how to use the novel and the ecological theories in the EFL classroom. The results show that there are noticeable spiritual and ecocritical themes in the novel as it depicts existential thoughts about the universe, God, and man’s relationship to nature.