It is answered by the prophet Isaiah, chapter 59, verse 2. But your iniquities have separated between you and your God, and your sins have hid His face from you, that He will not hear. Praise God, the things He loved to do then, He still loves to do to-day. Only one thing hindered the working of His power when He walked this old world. That thing was unbelief.
Faith is the key to that power.
Unbelief is the key that shuts out. Oh blessed light that shines in the darkness even though the darkness comprehended it not. Suffering one, see Jesus only, the Blessed Burden Bearer, carrying our sins, bearing our sicknesses, enduring our pain. Oh that the world might see Thee. In the Divine plan salvation and healing should never be divided.