God allows what we allow, get your theology straight, sin and death came through the fall of Man and with sin and death came sickness and disease, your interpretation of that verse is erroneous, you need to interpret scriptures with other scriptures and when it comes to healing your foundation is back in the Garden where there was no sin, sickness or poverty, and because of the Cross and the New Creation we have Isaiah 53:5 connected with Matthew 8:16 to 17 just to name a few when it comes to healing, have a good day