what is the best site provide chritian paintings?

Answer 1

I have found interesting ones at this site.
http://www.visionsfineart.com

Look at the works of the artist Octavio Ocampo.
He paints with illusion, some of the Christian Paintings are truly amazing.

I'm not usually found of Christian Art, but this is really quite unusual.
The Crucifixion and the Nativity are very striking.

Answer 2

At goodwill unless they are of superior quality.
If they are, display them for sale at the local churches.