A question arrived in my inbox asking: "If Christ took away all sin from mankind, which He did. Could you explain Matt. 12:31-32"

Now, the first issue is to address the claim that Christ took away all sin, since people do indeed continue to break not only the 10 commandments but Jesus' commandments as well as other biblical precepts.

WHAT IS SIN?

The study of sin is called Hamartiology. Sin in the most simplistic form is disobedience to God's desire, which does not require a stated command. This was the point of many of Jesus' lessons; that people could keep the letter of the Law but were breaking the intent or desire of God. God should not have to write out every little thing that constitutes a sin.