The Bible makes sense to me. I don't understand everything, therefore I leave many things in the hands of God,. And it also seems clear to me that God told only Adam (the human creation, He did not tell gorillas) that IF he ate from the tree of life he would die. Death is therefore to be understood that it is written in the DNA sequence of humans now as well as gorillas, birds, and other living creatures. It didn't have to be, and it will not always be that way, but will be changed biologically by God's hand to the opportunity to live forever without sickness or death. (Revelation 21:1-5, you might want to read it someday.)