William Yuille and his wife Naomi were married in 1964 and immigrated to Canada that same year. The Lord has given them two daughters and a son, nine grandchildren, and seven great-grandchildren (with two more on the way!). He worked in Information Technology with Ontario Hydro in Toronto until 1993, when he took advantage of an early retirement package. He had been President of MSC Canada for some time, and a year or so after his retirement, he became more involved in serving with them and had opportunities to visit missionaries and minister the Word of God in a number of countries in Africa, Asia, Europe and South America.
He attends Mount Albert Bible Fellowship in Mount Albert, Ontario and continues to be active in Bible teaching in his assembly and elsewhere. He has contributed to several publications and is the author of two books: The Faith that Saves (Studies in the Book of James) and God in Us (The Person and Work of the Holy Spirit).