The best place to hide something of great value is in a container that looks so common and mundane that nobody would mess with it.  Because they already think they know what it is, they won’t discover what is really inside.  That principle explains why Jesus couldn’t get much understanding from His hometown folks.  They thought they already knew all about Him.  They’d seen Him as a little kid, chucking rocks into the lake.  They’d seen Him as a teenager, getting used to feet that suddenly grew too big.  It was very hard for them to get past what they thought they knew and see Who He really was.

And Jesus said to them, “A prophet is not without honor, except in his hometown and among his relatives and in his own household.” And he could do no mighty work there, except that he laid his hands on a few sick people and healed them. And he marveled because of their unbelief.   (Mark 6:4-6a
I think we have the same problem.  We hear so much about Jesus over time, we think we have Him all figured out.  As a result, many people never get to know Him.  And really miss out.