Newton likely introduced her to the writings of William Wordsworth , and his gift to her of Ralph Waldo Emerson 's first book of collected poems had a liberating effect. She wrote later that he, "whose name my Father's Law Student taught me, has touched the secret Spring".  Newton held her in high regard, believing in and recognizing her as a poet. When he was dying of tuberculosis , he wrote to her, saying that he would like to live until she achieved the greatness he foresaw.  Biographers believe that Dickinson's statement of 1862—"When a little Girl, I had a friend, who taught me Immortality – but venturing too near, himself – he never returned"—refers to Newton. 
Dickinson personifies death as ‘the postponeless Creature,’ a creature from which one can neither hide nor run away. Death enters the house without even knocking on the door and expects to be recognized. The speaker describes death as ‘Bold -- were it enemy’ and ‘Brief-- were it friend’ and thereby makes the reader wonder which of the two it is. The last line ‘And carries on --out of it -- to God --’ suggests that death is, in fact, a friend. Being taken to God is desirable. In line seven, ‘Crepe’ is used as a metaphor for mourning while ‘“icicle” chills us to the bone.’ [xii]
The first line, which also makes the title now, is an odd one. The speaker, like any human being, cannot wait death on her choice. That is the fact and quite true so, we live until death waits for us. Life is a short span of time that death allows. As Dickinson would say, the real life will begin after death. The horse is time that pulls the narrator and her companions. That is “turned toward Eternity’. This means time is of two types: the time of our temporary life on earth and the eternal time of the soul. All this is rather religious and not agreeable to all people. Besides, the whole idea is rather pessimistic even to a devout religious person. But the poem is remarkable is its style and metaphor.