What are the "three bodies" (化身,报身,法身) mentioned in Buddhist Teachings?

In the same discourse , Venerable Ru Jun when asked what is a simple, good habit to have to help in our practice, answered:

如对圣颜养成习惯
师长佛陀的法身遍一切时处
此时此刻就在关照我 就在加持我 就在饶益我
你要常常在内心里面提起来这一点

I hope to keep this awareness and build up this habit.
:pray: