Question 7: What is sin?
Past “What is…” Posts:
Question 1: What is the gospel? | Response
Question 2: What is truth? | Response
Question 3: What is evangelism? | Response
Question 4: What is prayer? | Response
Question 5: What is theology? | Response
Question 6: What is church? | Response
[For more information on what to do with this post – go here and here.]