With all due respect, how do you know that Johnnie Cochran ended up in Hell?
While Johnnie Cochran may have had some infamous clients, he also was very generous to the poor with his very effective legal representation. He was well known for defending "the OJs but also the 'no-Js.'"
I will even dare say that as our right to an effective defense while being accused of a crime comes directly from God himself, that someone who provides these services, in a very effective manner, especially to those people who could not otherwise afford it, is helping greatly to further the cause of God in this world.
What I do know is the life he lived, a life full of human wreckage, duplicity, adultery, child out of wedlock, prevarication, dirty deals, and lies.
"A tree is identified by its fruit. If a tree is good, its fruit will be good. If a tree is bad, its fruit will be bad.
Matthew 12:33
Now, Cochran may have had a death bed conversion and accepted Jesus Christ as his savior and Lord. What a wonderful thing if that was the case!
But, "death bed" conversions are something that are very, very rare. Many pastors have stated this from their own experience.
Good works won't pay for your salvation (and even if they did, Cochran's life was nothing close to "good works" in the Christian sense by any definition). Only Christ can pay our debt. Bad works in ones life are a manifestation and testimony of what is in our hearts. All sin, however, can be forgiven - - but only through Christ.
If Johnnie Cochran was a follower of Jesus Christ, you would have a hard time finding any tangible evidence of it - anywhere.