He shall go to the generation of his fathers. In the Hebrew it is "thou shalt go," or "it (the soul) shall go;" but the meaning is well expressed by the Authorized Version. However much the wicked man delights in his life, and clings to it, nevertheless he has to die (Psalms 49:10), to join the "generations of his fathers," to go where they have gone before him.
And, once in Sheol (Psalms 49:14), they shall never see light. God will redeem the soul of the righteous from the power of Sheol (Psalms 49:15); but the rich ungodly man, and those to whom he goes—men of his sort—shall for evermore not see light.