God of My Father is a compilation of sermons of a father and son, representing how and what each one preached to his respective generation and congregation. Initially it was Dr. Mapson’s desire to honor his father’s ministry which spanned over 70 years, by preserving in written form, a few of his father’s sermons, particularly for the congregation his father served for over 50 years. Says Dr. Mapson, “Most of the sermonic material of black preachers has faded into history because our tradition has been primarily oral, rather than written.” The final result of this effort is a combination of the sermons of father and son.