be a shining example (of someone or something)
To be an excellent or ideal example of someone or something. My sister is a shining example of a successful businesswoman—she even has her own company now.
be a shining eˈxample (of somebody/something)
(also be a shining ˈlight) be a very good example of somebody/something, which other people can follow or copy: Their friends think Phillip and Joan are a shining example of a happily married couple.His books on grammar are a shining light in a very difficult and confused field.