Does God Promise Healing Today?

Many Christians suffer from various illnesses and injuries or have loved ones who do. Understandably, they wonder whether God still heals today. As we know, the Bible is full of accounts of healings. Many of them were spectacular, and the authorities of the day investigated some of them. In John 9 and in Acts 4:16, for example, the authorities never denied that the healing had occurred, they just took the stupid position of trying to cover it up. But does God still heal today? Or, to get right down to the heart of the controversy, does God promise physical healing to believers?