The Poetry of St. John of the Cross includes 25 of his most inspirational poems including What is Grace, By the Waters of Babylon, My Soul is a Candle, Within the Trinity and more.John of the Cross was a major figure of the Counter-Reformation, a Spanish mystic, Catholic saint, Carmelite friar and priest. He is considered, along with Saint Teresa of Ávila, as a founder of the Discalced Carmelites. His poetry and his studies on the growth of the soul are considered the summit of mystical.