Happy Feast of the Epiphany!
Why do Catholic Christians celebrate the Feast of Epiphany? I think the answer lies in the following reflection:
Epiphany means, in particular, the manifestation of the Savior to the Gentile world, in the person of the Magi. The way in which the Magi acted shows us the qualities that our faith ought to have. They were faithful to the inspiration of grace. They did not doubt nor stay to reason, but immediately began to carry out their decision. If we listen faithfully to the call of grace, we shall come to Christ, Who is the Life of our soul. The Church would have us associate ourselves with the adoration of the Magi and offer the infant God the gold of a life full of love and fidelity, the frankincense of a prayerful faith, the myrrh of our sorrows, tears, and sufferings which we unite to His own. When God makes the light of the Gospel shine in the sight of the pagans, or permits His Truth to be realized by those living in error, the Epiphany is renewed. The Epiphany is continued also in the faithful soul when her love of Christ becomes more fervent and steadfast, for then Christ begins to manifest Himself and lives in her by His Divine grace. While at Christmas we admire the union of Our Lord's Divinity with His humanity, at the Epiphany, we honor the spiritual union of our souls with Him. (cf this website)