realistic painting of biblical Cain with a spear fighting Abel with a reaper  scythe, a stone altar with white smoke ascending in the background, masculine and rugged, inspired art by Frazetta + facial symmetry + bright dramatic volumetric lighting, well lit, 8k octane render, intricate, epic composition, grim yet sparkling atmosphere, cinematic lighting + masterpiece, trending on artstation, very detailed, masterpiece, stunning