Correct, the Hebrews did not comprehend the law(s) while Gentiles never received the laws.
This is how it came about to teach all of repentence and of how the law functions lawfully.
How could the Gentiles repent if they did not have the law explained to them in order to repent from having broken the law?
The Gentiles, who were brought to be together with the original Floc,, shall we say through the Sheep GATE, FIRST HAD TO ELARN THE LAW. The Lord, Jesus teaches both Hebrews and Gentiles how the law should be approached and dealt with.
Yes, the curse of the law, death, was destroyed on the cross, but the law, newly understood by hIS TEACHING, IS NOT ABOLISHED, BUT IT is clarified.
This is why it is written not one jot or tiddle whill be obsolete or destroyed while there is yet sun and moon.
Let us be reasonable, we know, because of our Teacher's personal teaching, what laws are forever valid.
All of the law hangs on the two great laws of love. Now if all of the law is hanging on love, all of the law is to be obeyed. Of course this excludes the laws completed by our Savior, food, levitical, geographical dealing with living in Israel of this age,, punishment, etc........but the laws of moral behavior in love still are to be adhered to. Meanwhile we are saved by grace and we will not be perfect until HIs great and glorious Day when He, not we, completes the work He began in each of us.