Abraham's bosom vs purgatory

Abraham's bosom

name
  • The waiting place for the faithful dead between the crucifixion and the resurrection of Christ; paradise. 

purgatory

adj
  • Tending to cleanse; expiatory. 

noun
  • Any situation where suffering is endured, particularly as part of a process of redemption. 

How often have the words Abraham's bosom and purgatory occurred in a corpus of books? (source: Google Ngram Viewer )