Wounded I sing, tormented I indite,
Thrown down I fall into a bed, and rest:
Sorrow hath chang'd its note: such is his will
Who changeth all things, as him pleaseth best.
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This is called Joy's Coat in my 1903 SPCK edition. That makes more sense too, as Joy's coat features in the poem!
'And now my grief to sing', thanks for sharing.