In Zechariah 8:12, 'the vine shall give her fruit, and the ground her increase,' signifies that the spiritual affection of truth produces the good of charity, and the natural affection of good and truth produces the works of charity.

(Reference: Apocalypse Explained 695)

754. Verse 11 In the six hundredth year of the years of Noah's life, in the second month, on the seventeenth day of the month, on that day all the fountains of the great deep were split open, and the floodgates of heaven were opened.

'The six hundredth year, the second month, and the seventeenth day' means the second state of temptation. 'All the fountains of the great deep were split open' means the full extent of temptation involving things of the will. 'The floodgates of heaven were opened' means the full extent of temptation involving those of the understanding.