Henry Wadsworth Longfellow - My Cathedral lyrics

Like two cathedral towers these stately pines   Uplift their fretted summits tipped with cones;   The arch beneath them is not built with stones,   Not Art but Nature traced these lovely lines, And carved this graceful arabesque of vines;   No organ but the wind here sighs and moans,   No sepulchre conceals a martyr's bones.   No marble bishop on his tomb reclines. Enter! the pavement, carpeted with leaves,   Gives back a softened echo to thy tread!   Listen! the choir is singing; all the birds, In leafy galleries beneath the eaves,   Are singing! listen, ere the sound be fled,   And learn there may be worship with out words.