The answer is: Transfiguration

Luke 9:28-31

When Peter, James, and John accompanied Jesus up the mountain, they experienced something absolutely mind-blowing—the Transfiguration. Imagine it! Their teacher, suddenly glowing like the sun, combined with one profound meeting with legendary figures, Moses and Elijah. Talk about a celestial lineup!

This event holds significant meaning and plays a critical role in the themes of glory and divine approval throughout the New Testament. Observing Jesus lit up, these three disciples got a peek behind the curtain of reality, onto the glory of God exuding from Him. As if that didn't deepen their understanding enough, the appearance of Moses (the law-giver) and Elijah (representing the prophets) suggests a remarkable continuity in God's communication through history—both the Law and the prophets affirming the importance of Jesus in fulfilling God’s promise.

Fun fact: the place believed to be the site of the Transfiguration is traditionally thought to be Mount Tabor, although some speculative scholars suggest it might actually be Mount Hermon.

Also, do you know that the Transfiguration’s main message is encapsulated in a key phrase—“This is my Son, whom I love; with him I am well pleased”? It serves as a distinct reassurance for followers to listen to Jesus, reconsidering their priorities amidst worldly influences. This scene beautifully highlights the transformational power of faith and the intimate moments of divine understanding accessible in the journey of belief. The cool part? Those moments aren't trapped in history; they resonate within our personal spiritual journeys too!