Jesus might have been born before the age of grace and therefore under the law. He wasnt born under the condemnation of the law because He was born without the adamic nature.
Another good analogy is, it's not illegal until you get caught!
What makes you think you and I are not subject to the law of God? God's law is still in effect. It hasn't been done away with. Is it still wrong to murder, lie, steal, covet, etc...?
Romans 7: 6 But now we are delivered from the law, that being dead wherein we were held; that we should serve in newness of spirit, and not in the oldness of the letter.
7 What shall we say then? Is the law sin? God forbid. Nay, I had not known sin, but by the law: for I had not known lust, except the law had said, Thou shalt not covet.
8 But sin, taking occasion by the commandment, wrought in me all manner of concupiscence. For without the law sin was dead.
9 For I was alive without the law once: but when the commandment came, sin revived, and I died.
10 And the commandment, which was ordained to life, I found to be unto death.
11 For sin, taking occasion by the commandment, deceived me, and by it slew me.
12 Wherefore the law is holy, and the commandment holy, and just, and good.
13 Was then that which is good made death unto me? God forbid. But sin, that it might appear sin, working death in me by that which is good; that sin by the commandment might become exceeding sinful.
Romans 4: 15
Because the law worketh wrath: for where no law is, there is no transgression.
16
Therefore it is of faith, that it might be by grace; to the end the promise might be sure to all the seed; not to that only which is of the law, but to that also which is of the faith of Abraham; who is the father of us all,
There is that word grace again. It's by faith through the influence and power of the HS that Jew and Gentile become able to keep the law. It was that way with Abraham and it is the same with us.