Visualize a biblical scene based on Genesis 48:19. The father is respectfully denying the plea, with conviction and wisdom in his eyes, affirming his foreknowledge about the destinies of his sons. The son, slightly taken aback, is listening attentively. The prediction further unfolds as the father gestures towards the younger son, who is significantly smaller but carries an aura of underlying greatness. In the backdrop, envision an expansive vision of an array of nations symbolizing the multitude referred to in the scripture, represented as a diverse array of landscapes and cultures. Portray this scene in a medium akin to digital art.