Its divinity in each human being which keeps us in touch with one another and with god. It is this shared soul that makes all living things part of supreme soul. Namaste-  is a sanskrit word which means I bow to the divinity within you and it is mentally affirming divinity aspect in each of us.
Whatever we are doing sure to get results simply performing actions, and every action has reaction. Our all action deliver results,good or bad. And while saluting  to humans we are not saluting to that person, in fact we are addressing to soul within which  has a tiny spark of god. Those who are in habit of finding faults in others,they do not have regard for themselves and tired of life.
Harmony is everywhere in not,create it by producing joy within and share it with others without selfish motto. Transformation has to be done or suffer not only this life time but many followed by this. Concentrate on what gives you happiness,not to worries.
There are three types or religion,first religion of fears such as fire,air,water-wild beasts etc. we worship them for protection, second is based on ethical and moral concept deity meditated through priests. Thirdly  god entity as who punish and reward us for our good or bad acts. And lastly ultimate level of religion is cosmic(space,time,mass,energy and gravity)