One of the oldest and most globally beloved Catholic hymns, “Be Thou My Vision,” has a remarkable history dating back to the sixth century. 

The story of “Be Thou My Vision” begins with St. Patrick, who was kidnapped when he was 16 years old by pirates and then sold into slavery in Ireland. It was during his time in captivity that he became a Christian. Years later, he escaped and went home to England, only to return to Ireland, which was a pagan country at the time, as a missionary.  

In 433, the king of Ireland issued a decree on Easter Sunday that no one could light a flame in observance of the Pagan Druid festival. St. Patrick chose to honor Christ and light a candle for the Lord, anyway. He risked his life by climbing Slane, the highest hill in the region, and lighting a fire so that everyone could see how God’s love shines through the darkness. The melody of “Be Thou My Vision” was written years later by an anonymous composer who wanted to honor St. Patrick by naming the haunting melody “Slane.” 

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The history of the lyrics is more complicated. The words have been attributed to Irish poet St. Dallan  Forgaill’s sixth-century Gaelic poem “Rop tu mo Baile.” Although the oldest existing version of St. Dallan’s poem is from the 14th century, there is no verification that he wrote it. 

In 1905, nearly 1500 years after St. Patrick lit the flame on Slane Hill, the poem was translated into English by 25-year-old college student Mary Elizabeth Byrne. And ultimately, Eleanor Hull, an Irish woman, set Byrne’s lyrics to the tune of the “Slane” melody to honor St. Patrick in 1912. 

“Be Thou My Vision,” then became the song about the new life of St. Patrick, who lit the fire for Christ and, in so doing, like St. Paul’s conversion on the road to Damascus, brought the true faith to the pagan population of Ireland. 

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Father Christopher Heanue, director of the Irish Apostolate in the Diocese of Brooklyn, said the song “is very meaningful for the Irish,” noting it’s often used in the apostolate’s celebrations, including the annual feast of St. Brigid of Ireland Mass. 

Father Heanue added that it has stood the test of time because it’s “rooted in prayer.”  

“That makes it even more special,” Father Heanue said.  

The lyrics of “Be Thou My Vision” express the passion of St. Patrick as he pleads with the Lord to “Be Thou my wisdom, be Thou my true word; Be Thou ever with me, and I with Thee Lord.” The hymn, found in Church hymnals worldwide, is sung at weddings, funerals, and church services. It has been recorded by many popular artists, including Van Morrison, Alison Krauss, Jars of Clay, Chris Tomlin, Audrey Assad, and Matt Maher. 

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Msgr. Sean Ogle, vicar for clergy and consecrated life in the Diocese of Brooklyn, emphasized the connection between the hymn and St. Patrick. 

“The third verse uses the word ‘breastplate,’ which is a very specific reference to St. Patrick because the prayer he himself wrote is known as ‘St. Patrick’s Breastplate,’ which has also been set to music and is a wonderful song.” 

Msgr. Ogle also recalled the impact it had at the funeral of a friend’s 94-year-old mother.  

“It was one of the hymns the family chose because they love it so much. There is a theology behind it when you read the lyrics. It associates each verse with vision and wisdom,” he explained. “A person who is not just knowledgeable but has the wisdom to know what to do with that knowledge requires vision, and the vision here is Christ himself, the Lord.”