The whole tenor of the Bible indicates that healing is expected as the natural result of the quickened spiritual life. Preach the gospel, and heal the sick, are both included in the great divine commission. They are the inner and outer sides of one whole. The external is the visible sign and attestation of the genuineness of the spiritual and internal.
"He that believeth on me" (is this limited ?), "the works that I do shall he do also; and greater works than these shall he do; because I go unto the Father." (John XIV. 12.)
"And as ye go, preach, saying, The kingdom of heaven is at hand. Heal the sick, raise the dead, cleanse the lepers, cast out devils: freely ye have received, freely give." (Matt. X. 7, 8.)
"And these signs shall follow them that believe: in my name shall they cast out devils; they shall speak with new tongues; they shall take up serpents, and if they drink any deadly thing, it shall in no wise hurt them; they shall lay hands on the sick, and they shall recover." (Mark XVI. 17, 18.)
The Psalms are full of declarations, to the effect that wholeness is the natural result of abiding in God. Healing is biblical.