Sentence:  Set all your things in seemly good array Fit for so joyful day, The joyfulst day that ever sun did see, Fair Sun, shew forth thy favourable ray, And let thy <WSD>lifeful</WSD> heat not fervent be For fear of burning her sunshiny face, Her beauty to disgrace. 
Meaning of the word marked with <WSD> tags:  Bestowing life; enlivening. (from 13th c.)