Ezekiel 23

“Son of man, there were two women,
The daughters of one mother.
3 They committed harlotry in Egypt,
They committed harlotry in their youth;
Their breasts were there embraced,
Their virgin bosom was there pressed.
4 Their names: Oholah the elder and Oholibah her sister;
They were Mine,
And they bore sons and daughters.
As for their names,
Samaria is Oholah, and Jerusalem is Oholibah." vv.2-4

Read chapter 23
This parable of the two daughters is concerning Samaria and Jerusalem.  The cities are personafied as two daughters of the Lord.  Both were capitols in Israel, Jerusalem of the Southern tribes and Samaria of the Northern Tribes, and both went astray from the Lord committing harlotry.  Oholah is the name for Samaria and means Her Own Tabernacle.  Oholibah is the name for Jerusalem and means My Tabernacle is in Her.  Jerusalem is where the Lord chose to place and build His temple for His dwelling.   It's says they committed harlotry in Egypt, in their youth.  When they lived and were enslaved in Egypt for 400 years, God called them out for the first time as a whole people thus "in their youth."  What was engrained in their youth shaped them in to their decisions in their teenage/adult years.
Would such a humbling representation of what your sinful nature shows you are effect you?  How so?  How have you seen decisions made in ones youth continue in their adulthood?