Bishop Kot went to work in the archdiocese with great energy and zeal. He consistently defended the purity of faith and persistently worked on raising the religious life of the clergy and the faithful. He also took care of the Cathedral of Gniezno, which he found dirty and worn.[5] He was known as a "man commonly known and revered for science, a truly priestly soul and rare nobility of character." And he was able to lead in financial management.
He also took care of those who worked in the church estates, especially the peasants, whose fate especially lay in his heart.[6]
Kot was also a statesman of great stature, skillfully moving through court and church politics and operating in diplomatic channels.[citation needed]
In 1447 he crowned his younger pupil Casimir. However, in 1448, there was a problem of priority when the Bishop of Krakow Olesnicki received the long-awaited cardinal's hat and claimed priority over the primate. The dispute took three years to resolve, when it was decided that both bishops should take part in the deliberations of the Royal Council.[7]
He died on 14 August 1448,[8] in Uniejów, and on 19 August was buried in the Cathedral of Gniezno.[9] He was about 53 years old.[10] He was remembered at that time as "extremely shrewd, energetic and devout, looking forward to universal respect and trust".[11]