"Of labour you shall find the sum...."
See in text (Text of the Poem)
This line introduces an intriguing complication to the poem’s concept of the afterlife. When reworded, the line’s logic can be understood in a different way: in the afterlife, one receives comfort equal to the amount of labour done during one’s life. The precise nature of the labour is not clear, but one assumes it carries a sense of religious morality and thus is tied to good deeds.