HOW TO FIND CHRISTIAN ARTWORK ON THE WEB
Without a doubt, the quickest and EASIEST WAY to find illustrations and artwork for any Bible story is to SEARCH GOOGLE IMAGES.
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Quick Note about Copyrights:
US Federal Copyright Law protects the "fair use" by educators of copyrighted material in face to face, non-profit teaching use, but does not extend this right to use copyrighted material in what the law calls "public performances."
Yes, you can use any copyrighted image IF you're using it to teach in a non-profit face to face setting.
No, copyrighted images may not be used in a worship setting because the courts have determined that worship is a public "performance" (use), and not a "face to face teaching" use. The only exception would if you were critiquing/reviewing the image, but simply adorning a screen or illustrating a program cover with a copyrighted image is not "fair use."
A few websites:
The DORE woodcut Bible illustrations.
So famous and widely used that when you see them you'll say, "Oh yeah, those!"
(black and white) Copyright free.
http://catholic-resources.org/Art/Dore.htm
Art and Images from antiquity related to John's Gospel
a compilation of online images by a Jesuit priest searchable by story.
http://catholic-resources.org/John/Art.html
Realistic Images of Jesus
Startling set of 'realistic' images of Jesus, and some juxtaposed with modern elements by photographer Michael Belk.
https://michaelbelk.com/