"What Do We All Have In Common?" "What Do We All Have In Common?" was the first Gospel tract written by Mark Manning, in 1998. While living in the Dominican Republic, a predominately Catholic country, he used this tract (translated in Spanish) for his own, personal witnessing, teaching and preaching. This experience provided further insight on how to clearly articulate and demonstrate through illustrations that salvation is by faith and not by works- to even the most devout Catholics.