"Cain was a murderer, and was condemned as such, because the law against murder was in force;
the antediluvians were destroyed for their wickedness, because the law against covetousness, theft, murder and adultery, blasphemy and idolatry, was in force;
Noah was righteous because his life was in accordance with a true 
standard of right, which could have been none other than the moral law, as that includes all righteousness.
Lot was righteous, and the Sodomites fit subjects for fire and brimstone - by what law? - By the law of ten commandments; for the requirements of that law were just what they were transgressing.
***So all the way from Adam to Moses traces can be found of the violation of every one of the ten commandments, and the condemnation of that violation as a sin.
This is an open fact of which every candid reader of the Scriptures must be aware.
Q: How, then, dare men affirm that the ten commandments constituted a covenant which was not made till the time of Moses? Reason and revelation,
facts and figures, are all against them; and the truth will witness terribly against them in the Judgment of the great day."
Uriah Smith