Fallen humans are a mixture of good and evil traits and actions.
Only God is pure good.
The dividing of the light from darkness happens later.
Haggai 2:10-14
On the twenty-fourth [day] of the ninth [month,] in the second year of Darius, the word of the LORD came by Haggai the prophet, saying,
"Thus says the LORD of hosts: 'Now, ask the priests [concerning the] law, saying, "If one carries holy meat in the fold of his garment, and with the edge he touches bread or stew, wine or oil, or any food, will it become holy?"'"
Then the priests answered and said,
"No."
And Haggai said,
"If [one who is] unclean [because] of a dead body touches any of these, will it be unclean?"
So the priests answered and said,
"It shall be unclean."
Then Haggai answered and said,
"'So is this people, and so is this nation before Me,' says the LORD, 'and so is every work of their hands; and what they offer there is unclean.'"
how amazing is it, that Jesus Christ touches a leper, and they become clean, instead of Him being defiled???
Yet it is exactly what we should expect, knowing Who He is