The Noah-to-Abraham portion of the Messianic lineage includes a man named "Peleg," whom Scripture reports was so named because "in his days was the earth divided" (Genesis 10:25). Some have suggested that Earth was "divided," during Peleg’s lifetime, in the sense that humanity was divided linguistically as a result of the Tower of Babel event. Others have suggested that the term "divided" (in Genesis 10:25) refers to the splitting apart of the continents, assuming that continental splittings occurred after the Flood. However, neither of these views are based upon a comprehensive philological investigation of the Hebrew vocabulary involved, which suggests that post-Flood weather patterns were then producing extraordinary riverization, with results so geomorphologically dramatic that the genealogy of Genesis 10 was worth interrupting to mention this side-note. Besides addressing the question of what Peleg’s name means, this study illustrates how Hebrew philology studies can be used, in some contexts, to clarify details of Genesis history