Christ Made Sin? (2 Corinthians 5:21 (LD 15; COD Head 2 Art. 2)

The Apostle Paul sure chooses some strange words when he talks about Christ’s work on the cross.  An example of strange wording regarding the work of Christ is when Paul states that Christ became sin.  What does that mean?  If we really pause for a moment that sounds like Christ has sinned so he could relate to us.  Is that what the Lord is saying through the Apostle Paul?  Why would it be problematic that Christ would sin? What does Paul mean by this language?