I would and could never renounce my faith in Christ. There is nothing in the world that man could do to me that I have not already suffered and overcome. I suffer immensly from my injuries from a car wreck 10 years ago. I have developed a way to overcome pain and suffering by disconnecting from it in my mind. I have had over 60+ surgeries and been on my death bed over 2 dozen times. Death no longer frightens me, nor has it for many years. I nearly died just a year ago. Death should not frighten you. We all know where we reside in eternity. What people fear more than physical death, is if they are to die painfully or in great suffering.
Even if someone says the words that they renounce their faith, it does not make it so. Only what is held in the heart as truth is what determines whether someone could be called Christian or not. The whole point of finding strength in God is that no matter what degree of suffering you endure, that you can find the strength in Him to overcome any torture or persecution you may encounter. The most difficult persecution that most face is not that of physical suffering, but that of how their peers see them. If everyone you knew turned away, disowned, shunned, mocked or even hated you, how many people would stay true to their beliefs and not renounce them to no longer be mocked by the many? You should never care more about what man thinks of you than what God thinks of you. How can the praises of men compare to the praises of the Lord that you can receive?