Whatever maybe the religion, there will be more Mantras to make the people enlightened and get well. You may think, what is the use of continuous chanting of mantras and what changes will it make with us.
Actually, there are good mantras & bad harming mantras. The mantras are completely have connection with positive and negative vibrations. Whatever maybe the mantra, if you chant it regularly by focusing on something, then that thing will get those vibrations' effect!
In detail to say, concentration and dedication matters a lot with chanting mantras! For an example, You are sleeping regularly on your bed. One day, you are trying to sleep elsewhere. If so, it will take sometime to get sleep or some times you can't sleep in new place maybe! The reason is, Your subconscious mind knows that it's a new place. So, that uncomfortable feel will make you awake. But when you are going to your bed to sleep, then you will feel sleepy in some minutes! It's the effect of vibrations around your Bed area! That mean, you taught that specific bed area regularly only to take rest and sleep!
The same like that, when you are chanting the mantras regularly on specific place, that place will get vibration's effects as power! Positive or Negative is depends on Chanting mantras. For instance, you may felt some positive feel and energy once you visit the Temple, Church or Mosque! Do you know why? Because, the respective priests & divine persons are regularly chanting the mantras in that place with full dedication and high hope! As a result, whoever visit those pure divine places, they will feel that positive energy!
To get the positive energy, you no need to go temple, church or mosque every time. Yeah, if you can chant the good mantras in your desired place on routine basis, then that place will definitely get the positive vibration's ambiance!
Each Mantras chanting will give it's respective effect like Getting wealth, Cure the illness, Refreshing Karmas, Travelling towards Divine etc. So depends on your need, if you can chant the right Mantras with full hope & complete dedication, then you can make the any miracles in human life! You may say it as Magic, but I'm scientifically saying it as, the aftermath of Vibrations!!!