I struggled with this question for a long time. The requirements for the pastoral ministry are clearly listed in St. Paul's First Epistle to Timothy. I reviewed those requirements, some I met others I did not, so after much prayer, and soul searching, I dropped the idea of going to the Seminary...I just don't think God would call someone who conflicted with his word.
Although, Moses, David, and Paul were all 1st, or 2nd degree murderers.