A reading of religious teachings makes me to agree that faith will lead to the change. The holy personalities in the ancient times made persons suffering from diseases to be healthy, make dead man alive. The curse by them became a reality those times (as per books). In Hinduism, holy men sprinkled water on the persons either to bless or curse.
Now a days, in whatsapp, everyday, several messages are received. Some of them say think, believe and do good. I feel there is nothing in wrong in praying or wishing good for all.
Having faith alone is not enough. We have to be good mentally and physically. It will give peace of mind and possibly do good to the individual, family, friends and the society.
We do not believe such things easily because the preachers whom we see mostly do not practice what they say and this makes us to ridicule their sayings. The person may be wrong but the sayings may not be wrong.
Look at history to get the knowledge. May be over a period of thousands of years, there can be some misconceptions crept in. But, definitely there will be knowledge to see objectively and follow it.
So, let us think good, do good and wish good for all. It will bring change within us and in the society also.