And the LORD God formed man of the dust of the ground,
and breathed into his nostrils the breath of life;
and man became a living soul.
Genesis 2:7
"....explanation is given in the Talmud as to why the whole human race originated from one man: “Because of the righteous and the wicked, that the righteous should not say ‘we are the descendants of a righteous ancestor’ and the wicked say ‘we are the descendants of a wicked ancestor’.” The moral is that “neither can plead hereditary influence as the deciding factor in their character”. “Man was first created a single individual to teach the lesson that whoever destroys one life, Scripture ascribes it to him as though he had destroyed a whole world; and whoever saves one life, Scripture ascribes it to him as though he had saved a whole world.” CMI