He who in Himself believes — Sisyphus

Key to solve this riddle is in line 5 and 6. Background of this poem may be Dickinson's sympathy for the slavery. Sisyphean slaves were laborious and futile at that time. Slaves "defaced vicariously" for the shame of white men their gods, and "cannot perish."

01 He who in Himself believes－1
02 Fraud cannot presume－
03 Faith is Constancy's Result－
04 And assumes－from Home－

05 Cannot perish, though it fail5
06 Every second time－
07 But defaced Vicariously－
08 For Some Other Shame.
(F.835/J.969)
[1] He:: Sisyphus, king of Ephyra.
[2] Fraud:: He cheated Thanatos, or Hades and Persephone.
[3] Faith:: faith to be alive; or to go back one's original birthplace.
[4] assume:: to lay claim to, usurp. Sisyphus's trick blocked the path to the underworld and no human can die; somehow he usurped the Death. Home:: one's final resting place, referring to the grave; one's origin.
[5] it fail:: his punishment. He was punished by Zeus to roll a huge stone up to a hill, but failed always just before the top.
[6] Every second time:: every next time; endlessly.
[7] defaced Vicariously:: his story defaced gods.
[8] Other Shame:: the shame of foolishness; gods being cheated by human.