Putting these two thoughts together: We are not under a law and it's requirements that were never abolished. Lucys, Youse got some splainin to do (Desi Arnez accent)
Galatians 3:1-29 will clarify this. It's only 29 verses...won't take to long to read.
I hope you read this verse: Gal 3:17 Now this I say: A covenant confirmed beforehand by God, the law, which came four hundred and thirty years after, doth not disannul, so as to make the promise of none effect.
Depending on the time line you use the 10 Commandments came between 200 and 300 years after the covenant with Abraham. The Law Paul is talking about in Galatians is the ones from the Pharisees and Sadducees.
So are the 10 Commandments still valid or not?