God defines Good and Evil.
Sin is doing that which is Evil.
Pain and Death are the result of Sin.
God created Eden, Adam and Eve perfectly.
God gave Adam and Eve ( Humanity) the option to choose between Good and Evil - Life and Death.
All of Humanity was corrupted by original Sin (Adam and Eve).
All of nature was corrupted by original Sin.
So, Man opened Humanity up to Pain and Death when he chose to Sin - not God.
Christ came to destroy the works of the Devil.
Those works are Sin which produces Pain, Suffering and Death.
Christ`s Victory has provided for Redemption, Salvation, Regeneration, Healing and Prosperity - i.e. Grace.
But that Grace is only accessed by Faith. That Faith must be in Jesus, the Christ, the Son of the Living God.
So, until there is a new Heaven and a new Earth () there will be Sin, Pain and Death.
In the meantime, we are to willingly reject Sin and willfully claim Victory over Sin and its Consequences ( Pain and Death) by receiving God`s Grace by Faith in the finished work of Christ Jesus. ( )