Create a digital art interpretation of Genesis 15:13. Illustrated, it's a scene where a man, possibly of Middle Eastern descent, is told by an ethereal figure that his lineage will travel to unknown lands and endure hardship for a long period, symbolized by four centuries. The scene should be emotionally impactful, conveying the profound nature of the prophecy. Include elements like an ancient desert landscape under a starry sky, a humble man decked in ancient garb, and a ethereal figure aged and wise, emitting a radiant glow.