It includes healing by His stripes and forgiveness for our sins through the cross. Healing is just one side of the coin of being saved. Forgiveness of sins is the other. Jesus forgave the paralytic. Then He also healed Him to prove that He had the authority and power to do both.
Faith is in the hearing of an anointed word.
Faith cannot come just by speaking scriptures. Let us deal with the condition of the sinner before someone is saved. I have heard many preachers declare that salvation is like a bowl of fruit that is set before all men to partake of it. Those who choose to pick up an apple, or pear enjoy the benefit of salvation. Those who don't partake of what has been freely given for all to enjoy will burn in Hell forever.