Epiphany” means manifestation. And the “Epiphany of the Lord” is Jesus’ manifestation, not only to these three Magi from the East, but also as a symbolic but real manifestation of the Christ to the whole world.
These Magi traveled from a foreign and non-Jewish nation, which shows us that Jesus came for all people. These “wise men” studied the stars and were aware of the Jewish belief that a Messiah was coming. They must have been well-versed in the wisdom of their time and must have been intrigued by the Jewish belief in the Messiah. God used what they were familiar with to call them to adore Jesus. He used a star.