Epiphany, the 12th day after Christmas, celebrates the visit of the three wise men to the Christ Child.
The Feast of the Epiphany of Our Lord Jesus Christ is one of the oldest Christian feasts, though, throughout the centuries, it has celebrated a variety of things. Epiphany comes from a Greek verb meaning "to reveal," and all of the various events celebrated by the Feast of the Epiphany are revelations of Christ to man.
"O God, Who by the guidance of a star didst this day reveal
Thine only-begotten Son to the Gentiles,
mercifully grant that we, who know Thee now by faith,
may be so led as to behold with our eyes the beauty of Thy majesty.
Through the same Lord Jesus Christ, Thy Son,
Who liveth and reigneth with Thee in the unity of the Holy Ghost,