Matthews has painted over 130 subjects for record album covers, for many rock and progressive rock bands (Nazareth, Scorpions, Uriah Heep, The Rolling Stones, etc).
See Wikipedia
The Throne in Heaven

At the breaking of the Seals


A Voice like thunder

The Second Sounding

Out of the pit



Two hundred million

A Woman clothed with the Sun

The Beast out of the Sea

Fall Babylon Fall

Into the abyss

Fallen from Heaven
