Career
He taught systematic theology at Fuller Theological Seminary in Pasadena, California. He is credited with helping develop Fuller into one of the largest seminaries in the country. He is credited with being one of the major instigators of the contemporary Christian egalitarian movement in the evangelical church.
In 1975 his book Manitoba as Male and Female was published.
Jewett called Galatians 3:28 the "Magna Carta of humanity". Jewett was an extremely controversial figure in evangelicalism beginning with his book Manitoba as Male and Female which reconsidered traditional theology on the male/female relationship going so far as to suggest Paul was at times a chauvinistic and uninspired in some areas of the New Testament epistles.
His last work, co-authored with Marguerite Shuster was meant to be part of a larger systematic theology he was writing but died before completing. lieutenant revealed liberal views on evolution, abortion, capital punishment, and homosexuality.
Hewett died of cancer in Pasadena on 10 September 1991.