I DO believe that God heals, but the context
in that passage is obviously a spiritual one. You may want to find a different scripture to support your views of physical healing.
Tater Tot.
When Jesus
was on earth did he only heal spiritually or did He heal physically also?
He also said greater things than these shall you do.
He also said
these signs will follow those who believe and one of these was they shall lay hands on the sick and they shall be healed.
James said that if there are any sick among you let them call for the elders of the Church and let them annoint them with oil and the prayer of Faith will save the sick and if they hav commit any sin they shall be forgiven.