(From my free book Spiritualist Basics)
There is a quality of the universe called vibration. Every thing and every one vibrates. Vibration can be thought of as being on a scale from low (and slow) to high (and fast). Your vibration is low when you are depressed because you have lost your job or have turmoil in your family. You walk into a room where two people have just had a violent argument and you can "cut the tension with a knife" the vibration is low also. When you get up in the morning, it's a beautiful day and you have that feeling that "everything is perfect" or you are feeling love for someone, the vibration is high.
Vibration is more than your moment-to-moment happiness or unhappiness. When you walk into your aunt's house, the vibration is different than it is when you walk into a friend's house or your workplace or a church or an auditorium. The feelings you have are somewhat of an indicator of the vibration.
Things vibrate the same way people do. Buildings, cars, trucks, bridges, roads, houses, hills, mountains, and streams. Rocks vibrate - it is just so slow and solid that you don't normally perceive it.
Animals and plants vibrate. Cats, bats, rats, dogs, hogs, spiders, snakes and elephants. Trees, plants, flowers and grass vibrate too.
Color is vibration - black, red, orange, yellow, green, blue, indigo, violet, and white.
The God of your understanding is of the highest and purest vibration.
The person you are, the way you treat others (and your self), the things you do (and don't do), and the way you live your life largely make your vibration what it is. Your vibration is built up from life's everyday experiences and how you approach and handle them. Positive thoughts help bring about positive (higher) vibration.