Suffering, sickness, and death are all from sin. We cannot always understand what our exact sins are because the true degree of our evil is partially hidden from us for our own sake. This is why the Lord, for now, hides His face from us, or rather us from His face. It is why He said to Moses, “You cannot see my face, for no one may see me and live” (Exodus 34:29). Our sins separate us from the face of our creator. For now. But there is no sin, nor suffering, in this age that will last if you believe in the words of Jesus. If you walk with Him you will see how He always lifts you out of the valley of darkness, towards Him. Indeed, if you walk all the way, you will be saved from sin and one day see His face.
We are all sinners. Interesting idea. Not sure how many know this