Answer:
They need money to live
Explanation:
From Stanza four of the poem, "the man he killed", when the speaker could not find any reason to have killed the man he went into battle with, he justified himself by saying he enlisted in the army because he could not find any meaningful thing to lay his hands on. He said he joined because he knew nothing else to do and joining the military was a last resort.
"He thought he’d ‘list, perhaps,
Off-hand like — just as I —
Was out of work — had sold his traps —
No other reason why."
In this excerpt from the play The Tragical History of Doctor Faustus, the line that provides evidence that Faustus's human soul is predisposed to shun evil is the second one:
But, Mephistophilis, My blood congeals,
and I can write no more.
This line, as Marlowe uses blood as a symbol for the character of Faustus's soul, shows the reader his intention to avoid evil, but he feels he can't because it "<em>congeals</em>".