This is the text in Old English for anyone looking: https://www.poetryfoundation.org/poems/47296/caedmons-hymn-5...

Actually, here is the full text with the modern English inserted:

  Nu scilun herga hefenricæs uard
  Now let us praise Heaven-Kingdom's guardian,

  metudæs mehti and his modgithanc
  the Maker's might and his mind's thoughts,

  uerc uuldurfadur sue he uundra gihuæs
  the work of the glory-father—of every wonder,

  eci dryctin or astelidæ.
  eternal Lord. He established a beginning.

  he ærist scop ældu barnum
  He first shaped for men's sons

  hefen to hrofæ halig sceppend
  Heaven as a roof, the holy Creator;

  tha middingard moncynnæs uard
  then middle-earth mankind's guardian,

  eci dryctin æfter tiadæ
  eternal Lord, afterwards prepared

  firum foldu frea allmehtig
  the earth for men, the Lord almighty.