moses was the one who received and judged isreal by it and gave commands and understand of how to implement it. if one wants to be technical the laws of god. are the ones found in the ten commandments that exclude the shabat. all those were implied in genesis to be in existence
1) murder. cain was damned by god for killing able
2) adultery. joseph fled from it and called and on offense to god, and abilemech was warned by god not to take sarai as a wife because she was married to abram
3) lust, idolatry are in the land of Sodom and gommorah.
4) idolatry. rebeccah, stole which is though shall not steal command as well, a house god and later obviously had to choose to believe the YHWH as she married Isaac and believed the prophecy of the Hebrew nation
5) sin and all manner of it was the reason the earth was flooded. see matthew 24 when jesus speaks of his return and described what men are doing when he is coming and also pauls statements on those that are outside the blood and what they do and where they are in revalation 22.