What is the good word? is that the bible? can it help people get well faster?

Possibly: The bible is often referred to as the good word. If one places faith or believes in a higher power, such as god, there is often relief and less stress and potential benefits associated with this. Many believe miracles and prayer help cure or heal also. The benefits of having access to others of similar faith/belief brings comfort too.

That word is "Love": The poets and scriptures of all the world-faiths proclaim it. It provides the greatest meaning and satisfaction that most people find during their natural lives. People will maintain a healthy lifestyle or work to recover because they care about someone else, perhaps more even than for themselves. And love of humankind is what propels most people to careers in medicine and caregiving.