Kingdom gospel

[Epoisses]

I think you have forgotten that Moses has also died. So, there is no way to get grace from him. Since we are humans and indeed, "There has never been a man upon earth to have done only good and never sinned," no big deal, (Ecclesiastes 7:20) by the grace of HaShem every time we need to set thing right with the Lord so that our sins from scarlet red become as white as snow, all we need is to repent and to return to the obedience of God's Law.(Isaiah 1:18,19)

The law of Moses was given to reveal sin. By nature sinners don't see themselves as sinners so it needs to be pointed out over and over and over. Those that spend their whole lives keeping the law but never see themselves as sinners are lost like the Pharisees.