I'm a little over half-way through and while reading my interest was piqued at the hymn Frank decided to sing. I've never looked it up before but this time I did and I may have found it!
Come, Ye Thankful People, Come
https://www.youtube.com/watch?v=yVIsS243854 (Youtube is not affiliated with TLC; click at your own risk, etc.)
Lyrics:
1. Come, ye thankful people, come,
raise the song of harvest home;
all is safely gathered in,
ere the winter storms begin.
God our Maker doth provide
for our wants to be supplied;
come to God's own temple, come,
raise the song of harvest home.
2. All the world is God's own field,
fruit as praise to God we yield;
wheat and tares together sown
are to joy or sorrow grown;
first the blade and then the ear,
then the full corn shall appear;
Lord of harvest, grant that we
wholesome grain and pure may be.
3. For the Lord our God shall come,
and shall take the harvest home;
from the field shall in that day
all offenses purge away,
giving angels charge at last
in the fire the tares to cast;
but the fruitful ears to store
in the garner evermore.
4. Even so, Lord, quickly come,
bring thy final harvest home;
gather thou thy people in,
free from sorrow, free from sin,
there, forever purified,
in thy presence to abide;
come, with all thine angels, come,
raise the glorious harvest home.
Interesting that this song would be chosen. Foreshadowing for LB, perhaps? Hmm...