4588
Believing the grace of Christ was indispensable to human freedom , he helped formulate the doctrine of original sin and made significant contributions to the development of just war theory .
 person: Christ
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Christ