How did Lincoln's childhood influence his stance on slavery?

There are at least two ways in which Lincoln's childhood
experiences are said to have impacted his views on
slavery.

First, Lincoln's family belonged to a church known
as the Separate Baptist church.  This church was opposed to slavery.  Lincoln may have
absorbed some of his attitude towards slavery from
this.

Second, Lincoln's family was forced to leave Kentucky
and go to Indiana when Lincoln was about 7 years old.  This move was caused mostly by
conflicts over the title to the land that Lincoln's father had believed he owned. 
However, Lincoln himself said that part of the reason for the move was opposition to
slavery.

Beyond that, we know little about how Lincoln's
childhood might have affected his attitudes on the issue of
slavery.