How does Douglass develop a theme of spirituality in Chapter 10?

I think that the idea of spirituality is something present
in Chapter 10 of Douglass' work in the extreme level of pain and suffering he must
endure.  There is a spiritual dimension to this chapter because it shows how Douglass
must endure one last test through his interactions with Covey before he achieves
redemption.  In this, the spiritual dimension is evident in how there is intense testing
in order to achieve a spiritual notion of redemption and salvation.  While Douglass had
endured unspeakable cruelty prior to Covey, it seems that his battles with Covey
represented one of the last hurdles that Douglass had to endure before he could begin to
understand some notion of liberation from his predicament.  At the same time, Covey
represents a force of negation, something that would represent the embodiment of evil. 
It is through this battle that Douglass must face down the inherent evil that slavery is
once and for all.  In defeating Covey, there is a spiritual dimension of good defeating
evil, the force of life overcoming the force of negation.  In this resolution, one can
see a theme of spirituality developed.