The article discusses the most important feature of the mysticism of St. Faustyna Kowalska in the context of the Trinitarian mysticism. The author’s intention is to propose to the reader an active participation in experiencing the mystery of the Holy Trinity in a life united with the person of the Son of God who has revealed the first and the most important attribute of God – His Mercy in the dimension of the Merciful Trinity. In mystical literature, the title of God as One in Trinity, appears for the first time in the Diary of St. Faustyna Kowalska, in many innovative wordings. The formulations of the mystic described, include descriptions of the vision of the Holy Trinity, as well as her personal thoughts, most often appearing inseparably, as a single conjunction of mystical reality.
mysticism of Saint Faustyna Kowalska ; the mercy of God ; the Holy Trinity mistycyzm św. Faustyny Kowalskiej ; miłosierdzie Boga ; Trójca Przenajświętsza