Final answer:
The last two lines of John Gillespie Magee, Jr.'s poem 'High Flight' convey a spiritual element, suggesting the author's transcendent connection to something greater through the experience of flight.
Step-by-step explanation:
The main effect of the last two lines of the poem "High Flight" by John Gillespie Magee, Jr. is to suggest that there is a spiritual element to the author's experience. When the speaker says, "I've...touched the face of God," it conveys a sense of transcendence and a profound connection to something larger than oneself, which is characteristic of spiritual experiences. This is not about exaggeration, pridelessness, or feeling unstoppable—it is about reaching a sublime state of being through the act of flight.