In a recent book, Presidential Praise: Our Presidents and Their Hymns authors C. Edward Spann and Michael E. Williams Sr. note that the title of President George W. Bush’s autobiography, A Charge to Keep, was drawn from Charles Wesley’s hymn. The choice of this title is but one indication of the role this hymn has played in the life of President Bush, as well as the influence of this hymn 250 years beyond its composition. “A charge to keep I have” is grounded in Scripture. In this case, Leviticus 8:36 is the primary source. This Scripture is from the ordination of Aaron and his sons for the priesthood. (Taken from: http://www.umcdiscipleship.org/resources/history-of-hymns-a-charge-to-keep-i-have)