This is one of my favorite hymn tunes. It's a traditional Irish melody harmonized here by David Evans with last verse reharmonization by Noel Rawsthorne. The text was versified by M.E. Byrne and translated by Eleanor Hull. The introduction, modulation, and closing are mine.
1. Be thou my vision, O Lord of my heart; all else be nought to me, save that thou art--thou my best thought, by day or by night, waking or sleeping, thy presence my light.
2. Be thou my wisdom, and thou my true word; I ever with thee and thou with me, Lord; thou my great Father; thine own may I be; thou in me dwelling, and I one with thee.
3. High King of heaven, when victory is won, may I reach heaven's joys, bright heaven's Sun! Heart of my heart, whatever befall, still be my vision, O Ruler of all.