 As the two "Jerichos" were about a mile apart, one may understand that Jesus left Luke's Jericho and was arriving at Mark's Jericho when this took place.Sellin's main topic was the study of the Old Testament in historical, religio-historical and theological perspectives.Probably his most successful book was his "Einleitung in das Alte Testament" from 1910, which was updated and expanded by himself (until 7th.