Father Josef came to Taiwan in 1970. After several years of missionary work, he often felt pain in his knees, but when he went to the doctor all he got was painkillers. The pain did not improve, and as well as limiting his mobility and preventing him from sleeping properly at night, it left him feeling weak throughout the day, so he was unable to properly prepare his Sunday sermons.
一九七○年，吳神父來到台灣，傳教數年後，他常覺膝蓋疼痛，就醫後也只是拿回一些止痛藥，但膝蓋疼痛卻不見好轉，除了行動不便、夜裡睡不好覺，鎮日也覺體力不支，無法好好準備主日佈道講稿。