Abstract
Originally the Adoro te devote was not a liturgical hymn but a prayer, probably intended by Thomas Aquinas for personal use when attending mass. Quoting the at present most reliable version of the poem, the author studies Adoro te devote from the angle of transformation: poetic, Eucharistic and mystic or eschatological transformation. Structure and form are analysed, and a number of themes discussed: two alternative interpretations of adoration, several concepts of truth intended in the poem, the good thief and doubting Thomas as symbols of moral and spiritual imperfection, and living in connection, in union with God.