When one ties the following verses to gather:
Deuteronomy 1:39 Moreover your little ones, which ye said should be a prey, and your children, which in that day had no knowledge between good and evil, they shall go in thither, and unto them will I give it, and they shall possess it.
Isaiah 7:16 For before the child shall know to refuse the evil, and choose the good, the land that thou abhorrest shall be forsaken of both her kings.
With these following verses:
James 4:17 Therefore to him that knoweth to do good, and doeth it not, to him it is sin.
Rom 7:7 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.
Rom 5:13 (For until the law sin was in the world: but sin is not imputed when there is no law.
1 John 3:4 Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.
Then one can see that a child who does not have an understanding of right and wrong ( duet1:39, isa7:16) cannot have the law because the law is what shows us right from wrong ( rom7:7) and until the law is there to show right from wrong sin is not imputed ( rom5:13) because sin is a transgression of the law.
Just in case someone should mistaken me to be saying that this could apply to adults a brief reading of
Rom 2:14 For when the Gentiles, which have not the law, do by nature the things contained in the law, these, having not the law, are a law unto themselves:
Rom 2:15 Which shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts the mean while accusing or else excusing one another
Will show otherwise.