But thou, when thou prayest, enter into thy closet, and when thou hast shut thy door, pray to thy Father which is in secret; and thy Father which seeth in secret shall reward thee openly. But when ye pray, use not vain repetitions, as the heathen do: for they think that they shall be heard for their much speaking.

-Bible (NewTestament)
St Matthew 6:6^7.

They shut me up in Proseö As when a little girl They put me in the Closetö Because they liked me'still'.

-Dickinson, Emily Elizabeth
c.1862  Complete Poems, no.613 (first published1935).

And still she slept an azure-lidded sleep, In blanched linen, smooth, and lavendered, While he from forth the closet brought a heap Of candied apple, quince, and plum, and gourd; With jellies soother than the creamy curd, And lucent syrops, tinct with cinnamon; Manna and dates, in argosy transferred From Fez; and spiced dainties, every one, From silken Samarcand to cedared Lebanon.

-Keats,John
  Lamia, Isabella, The Eve of St.  Agnes and Other Poems,'The Eve of St.  Agnes', stanza 30.