Beraishis 6I Diverse Races and Ethnicities

As an introduction to understanding the different natures of Noach’s sons, as understood by studying the meaning behind their names, RSRH writes:

Although the races and ethnic groups of mankind differ from one another, this diversity existed even before the flood and, by God’s design, was permitted to survive the flood. This indicates that God’s plan is to realize the ultimate purpose of mankind despite all the national differences, or perhaps precisely through the interaction between the different nationalities.

If history shows us diverse nations endowed with disparate qualities – nations endowed with intellectual ability or emotional refinement beside nations in which burning sensuality seems to predominate – we should not, as a result, despair of mankind’s future. We should believe with deep faith that all the different races of mankind were created for one human ideal and are driving toward one goal:
כי מלאה הארץ דעה את יהוה כמים לים מכסים
For the land shall be filled with devotion to Hashem as water covers the sea.

(After the flood, we see Noach’s sons’ natures emerge into action and we learn of Noach’s prophetic words in response. See RSRH’s commentary there – 9:25-27, pages 243-249 – that explains how these streams of mankind will ultimately lead to one goal. )

Beraishis 6:10
pages 176-178