"Be Thou My Vision" is a hymn based on an Irish poem dating back to the eighth century, "Rob tu mo bhoile, a Comdi cride." Translated by Mary E. Byrne and versified by Eleanor Hull, the words are typically paired with the traditional Irish melody "Slane," named for the hill on which St. Patrick is said to have lit the Easter Eve fire to challenge the pagan King Loigaire.
As with many hymns, the words are a prayer.
Be Thou my Vision, O Lord of my heart,
Naught be all else to me, save that Thou art;
Thou my best thought, by day or by night,
Waking or sleeping, Thy presence my light.
Be Thou my Wisdom, and Thou my true word,
I ever with Thee and Thou with me, Lord;
Thou my great Father, thy child shall I be,
Thou in me dwelling, and I one with Thee.
Riches I heed not, nor vain empty praise,
Thou mine Inheritance, now and always;
Thou and Thou only, first in my heart,
High King of Heaven, my treasure Thou art.
High King of Heaven, my victory won,
May I reach Heaven’s joys, O bright heaven’s Sun!
Heart of my own heart, whatever befall,
Still be my Vision, O Ruler of all. Amen