According to these theologians, what does the incarnation and human suffering have to do with salvation?

THEOLOGY ASSIGNMENT 

Include references to as many of the primary sources as you can but do not use large quotations. Feel free to admit 

things you do not understand. Feel free to ask questions. Feel free to mention disagreements you have. 
Critical thinking
There are 7 sources in the reading they should be used to answer the question 

ESSAY QUESTION: According to these theologians, what does the incarnation and human suffering have to do with
 salvation? 
The essay should demonstrate that I have strong grasp of the material and convincingly demonstrates that the reading has been read and understood 
Minimum word count of 500