Another matter, “all the rivers go to the sea,” – all the dead enter only the grave, but the grave is never filled, as it is stated: “The grave and oblivion are not sated…” (Proverbs 27:20). You might say that once they die in this world they do not live again in the World to Come; the verse [therefore] states: “To the place that the rivers go, they go there again” – to the place that the dead gather in the World to Come, there they return and are destined to recite songs in the messianic era. What is the reason?47What is the source? “From the ends of the earth we have heard songs” (Isaiah 24:16); “your dead will live, my corpses shall arise” (Isaiah 26:19).