God is describing Holiness. You only have to read the OT a little before you realize that a LOT of the OT figures were not very "holy" themselves, when held up to God's standards. In fact, none of us can uphold them perfectly.
That is why Jesus had to come.
Were
any of the OT figures righteous, really.
None is righteous, no, not one;
no one understands;
no one seeks for God.
All have turned aside; together they have become worthless;
no one does good,
not even one.
St. Paul quotes David, who himself was not righteous, being the adulterer and murderer that he was.
None is righteous, no, not one.
All the drama in the years between Adam and Jesus - the incest, the violence, the idolatry, the sorcery, and all the rest - is the story of a lawless people whose God is, by and large, just another god.
That is why Jesus came; he brought an end to that lawless, Jewish age. His flesh was the veil that was ripped open to reveal the glory of God once again on the earth. Read the book of Hebrews.
Think again about why he came, really. Read the New Testament, even, if you have to.
Even in the context of scripture, hell is a fiction. Either you're among the righteous now or you're not. Either you're a Christian or you're not.