Philip’s travels in Acts 8:40 and how Peter follows in Philip’s footsteps. 1.5 minutes from Acts scholar Craig Keener.
For 23 free lectures on Acts, see http://faculty.gordon.edu/hu/bi/ted_hildebrandt/DigitalCourses/00_DigitalBiblicalStudiesCourses.html#Acts_Keener. For more information on Philip as Peter’s forerunner, note the work of F. Scott Spencer.