Eighteen words are enough for Emily Dickinson to fold a small piece of theology into one anxious "lest." The speaker imagines a danger: that "this", the present moment, the life we are living, perhaps some peak of happiness, might turn out to be Heaven itself. To prevent the mistake, "An Obstacle is given." Its job is not to be overcome but to measure. It "gauges a Degree / Between Ourself and Heaven." Whatever blocks us also tells us how far we are from what we want.
The first line carries the most interesting logic. "Lest" means "for fear that," so the sentence runs backwards: the obstacle exists because of what might happen without it. Heaven is treated less as a reward being withheld than as a category that must be kept distinct. Yet "indeed" gives the line a flicker of longing. "Heaven indeed" sounds like someone who has felt something so good that the only comparison left is the divine. The obstacle then works as a correction applied to joy, a reminder that the feeling, however large, is not the real thing.
The second line is quieter but just as odd. "Is given" is passive, so no giver is named, though the reader assumes one. "Given" is also the language of presents, and an obstacle is a strange thing to receive as a gift. The word sits between kindness and constraint, and the poem never settles which. A reader might hear gratitude, resignation, or a faintly dry irony about a Heaven that guards its boundaries so carefully.
The diction pushes in the same direction. "Gauges" belongs to the workshop and the laboratory, a word for instruments and exact readings, and here it stands beside the biggest word imaginable. That coolness is unsettling. "Degree" is a unit on a scale, but it can also mean a step or a rank, so the distance to Heaven seems graded rather than a single blank gulf. "Always" adds that the measuring never stops. Then there is "Ourself." Where we expect "ourselves," the singular word seems to gather everyone, the speaker and reader included, into one solitary figure facing the barrier. That is an inference from the wording, but it suits the poem's sense of a shared, lonely position. The capitals on Heaven, Obstacle, Degree and Ourself, as they appear in the text supplied, lift these abstractions into near-characters, like pieces set out on a board.
The form is just as compact. The lines run six, six, eight and six syllables, in a mostly iambic pulse. The stanza loosely recalls a hymn, a pattern Dickinson often borrowed, but the third line stretches while the others stay clipped. That longer line is where the measuring happens, and the poem takes its widest step there before dropping to the short final line. The rhymes are imperfect. "Indeed" and "Degree" share a vowel sound but not an ending, and "given" and "Heaven" nearly match without quite doing so. The near-rhymes echo the theme: earth and Heaven come close to matching but never coincide. The word order does something similar. "Heaven" opens the poem and closes it, with "Obstacle" wedged between, so the structure acts out the very phrase that ends it, "Between Ourself and Heaven."
What makes the poem worth remembering is the way it holds a paradox without resolving it. The obstacle is a frustration, but it is also the only thing that gives the distance a size. Without it, the poem suggests, we could not tell where we stand. Whether we should accept that as comfort or resent it as a rule is left open, and the poem is short enough that the question stays with the reader. Dickinson, whose nearly 1,800 poems mostly appeared only after her death in 1886, often worked in this compressed way, packing an argument into a few plain-looking lines. Here the plainness is the trick: the words are simple, the logic is slightly twisted, and a reader who thinks the poem is easy soon finds it is not.