Death is potential to that Man — Carton and Darney

Death is potential to that Man 1
Who dies-and to his friend-
Beyond that-unconspicuous
To Anyone but God-

Of these Two-God remembers 5
The longest-for the friend-
Is integral-and therefore
Itself dissolved-of God-
(F.650/J.548)
[1] that Man:: Sydney Carton. The poem tells how Carton died for Darney in A Tale of Two Cities (1859) by Charles Dickens.
[2] his friend:: Charles Darney. Who dies, and to his friend:: Carton disguised himself to be Darnay and died for Darnay; to die also means to mold.
[3] unconspicuous:: the guards were unconspicuous of the disguise.
[5] Two:: a hint on the title, Two Cities.
[7, 8] integral, dissolved:: a hint on the exchange of their identity.