The easiest and probably most accurate reason is that your tenant is trying to buy time in the rental for free. He can stay there until the judge grants you possession and the sheriff comes to kick him out. That could be around a month to two months time depending on when the court date is scheduled and how soon the sheriff's schedule allows him to come out.
I wouldn't continue speaking to him or asking questions unless they were in writing or through your attorney. File the paperwork and proceed. At this point, don't feel bad or concern for this man. Whatever he has going on, he brought on himself and probably deserved it and must deal with himself. He is unhappy and mad that you are actually filing for eviction and want the rent so he will say anything that will hurt you. He is already hurting you financially not he is trying to get you emotionally because he thinks that it will devastate you enough that it will delay you in what you must do or get a reaction from you that he can use against you in court. You are stronger than that and will not fall for his tactics. It's unfortunate that the paperwork wasn't filed sooner but there is nothing to be done about that now and lessons have been learned for the future. You do not need to tell him that you have filed or plan to file. File today. Hopefully you are at the courthouse or at your lawyers right now.
Thank you so much for your kind words. I try never to use the death card. I try to do things on my own now. I have been on the phone trying to find an attorney that does nothing but Eviction. Thank you sooo much.