Whittier's title plays a small trick. "The Worship of Nature" could mean worship aimed at nature, but the poem quickly shows the reverse: nature is the one doing the worshipping. Sea, hills, mist, forest and stars make up a vast congregation, and the only creature missing from the service is the human being. That reversal is the central idea, and Whittier saves its sharpest edge for the final lines, where nature's "signs and voices shame / The prayerless heart of man."
The form is calm and steady, which suits the claim. The poem runs to ten quatrains, each rhyming ABAB, with longer lines of eight syllables alternating with shorter ones of six, a pattern familiar from hymns. The rhymes are plain and full ("sung" and "strung," "far" and "star"), and the rhythm rarely stumbles. That regularity quietly supports the opening statement that the harp "Has never ceased to play." A poem about unbroken devotion would sound odd if it kept breaking its own pattern. The echo of "the song the stars of morning sung" also recalls the biblical image of the morning stars singing together, which sets the tone from the start.
What carries the poem is a single extended metaphor: the world as a church. Whittier builds it piece by piece. The waves "kneeling on the strand" have "white locks bowing to the sand," so foam becomes the hair of bowed elders, and the sea becomes "The priesthood of the sea!" Pearls are offerings. The earth sends up "incense" from "many a mountain shrine," and dew in flower cups becomes "sacred wine." Mist rises "white as wings of prayer," and the sunset is "altar-curtains." By the ninth stanza the architecture is complete, with the sky as "the temple's arch" and earth and air as its transept. The reader ends up standing inside a building they watched being put up.
Sound matters as much as sight. The poem is full of instruments and voices: a harp, a sung chorus, hills that "take up the song," winds with "hymns of praise," and a "thunder-organ of the cloud." The hills act like a congregation answering the sea, so the worship passes outward from one part of nature to the next.
The worship is not all joyful, which makes the poem more convincing. The winds are "loud" with praise but also "low with sobs of pain," and rain becomes "dropping tears." The forest in stanza eight shows both moods. At twilight it has a "drooping head and branches crossed," an image that suggests folded arms, or perhaps a cross, and the forest "grieves." In sunlight the same trees speak "with tongues of Pentecost," a reference to the New Testament moment when the disciples suddenly found themselves speaking. Here the flickering leaves are the tongues. Grief and rejoicing both count as prayer, and nature's devotion covers the whole range of feeling.
One detail is worth pausing on. Whittier is known as a Quaker, and that tradition has generally been wary of set ritual, ordained priests and church music. Judging by the imagery, it is striking that he borrows priests, altars, incense and organs so freely. One possible reading is that nature supplies, without any human institution, all the ceremony a worshipper could want. That is an inference from the text rather than a stated claim, but it fits a poem in which no building or clergy is needed.
The last stanza turns the poem from description to accusation. Nature "keeps the reverent frame / With which her years began," meaning it has held the same attitude since the beginning, while humanity has drifted. The word "shame" lands hard after nine stanzas of gentle, musical imagery, and the singular "heart of man" makes the charge feel personal. Having been invited to admire the service, the reader is told they are not taking part.
That is what gives the poem its force. It is easy to read as a pretty catalogue of natural scenes, but it is really an argument that devotion is already going on all around us, and that the real question is why a person would stay silent in the middle of it.