Visualize a scene from Revelation 16:4 - 'And the third angel poured out his vial upon the rivers and fountains of waters; and they became blood.' This imagery should be in a surreal and painterly style reminiscent of pre-1912 artwork, using the medium of digital art. Show a celestial figure, identified as the 'angel', pouring a vial into a river which transforms into a vivid, flowing substance of crimson, similar to blood. The transformation of the water should be a dramatic focal point, creating a sense of profound spiritual context.