Relevant Words of God:
During His first incarnation, it was necessary for God to heal the sick and cast out demons because His work was to redeem. In order to redeem the entire human race, He needed to be compassionate and forgiving. The work that He did before He was crucified was healing the sick and casting out demons, which presaged His salvation of man from sin and filth. Because it was the Age of Grace, it was necessary for Him to heal the sick, thereby showing signs and wonders, which were representative of grace in that age; for the Age of Grace centered around the bestowal of grace, symbolized by peace, joy, and material blessings, all tokens of people’s faith in Jesus. That is to say, healing the sick, casting out demons, and bestowing grace were instinctive abilities of Jesus’ flesh in the Age of Grace, they were the work of the Spirit realized in the flesh.
from “The Essence of the Flesh Inhabited by God” in The Word Appears in the Flesh