[1] He gained his two Fine Arts teaching certificates, first in Kraków in 1930, then in 1936 at the Craft Institute in Warsaw.
[2][3] The image was painted by Hyła five years after the death of Faustina Kowalska in 1938, under the direction of one of her confessors, Józef Andrasz.
[3] It was somewhat inspired by an earlier 1934 depiction of the Divine Mercy by Eugeniusz Kazimirowski, a painting that had been supervised by Kowalska herself and her other confessor, Michał Sopoćko.
[3] Hyła's original version had Christ against a country landscape background, but this was deemed "non-liturgical" and was subsequently edited out of the second, more familiar, depiction of the subject.
Hyła also painted several portraits, including those of Albert Chmielowski, Józef Piłsudski, the Capuchin Provincial, Kazimierz Niczyński and a series of landscapes including: When on the instruction of Archbishop Karol Wojtyla, preparations began for the beatification of Faustyna Kowalska, Hyła donated the copyright of his painting to Kowalska's order of nuns, the Our Lady of Mercy convent in Kraków.