Luke 2

Luke2:40 And the Child grew and became strong in spirit,^[k] filled with wisdom; and the grace of God was upon Him.

Luke2:52 And Jesus increased in wisdom and stature, and in favor with God and men.

As we always say, that we should learn from Jesus... this here is another excellent example. What can be better for a child than growing up, becoming strong in spirit, being filled with wisdom and being in favor with God and men. I think that if a child is granted these things, it will surely become a useful servant for God! A loyal and faithful servant, filled with wisdom and being strong in spirit.
So: let's take Jesus as our example... when he was just 12 years old, he was already learning God's will and words - really impressive!!! (his parents and neighbours must have thought:"how will this child be, when it has grown up?")