manna from heaven

Noun

• a sudden happening that brings good fortune (as a sudden opportunity to make money)
  • the demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed like an assembly line
    

• (Old Testament) food that God gave the Israelites during the Exodus

Related words

• Synonyms: 
  boom , bonanza , gold rush , gravy , godsend , windfall , bunce , miraculous food , manna