The leaven of Matthew 13:33
⚪ It symbolizes something Negative
Symbolic Significance. [...] Because of the negative aspects associated with leaven, Jesus evidently had in mind corrupting elements when he said : "The kingdom of the heavens is like leaven, which a woman took and hid in three large measures of flour, until the whole mass was fermented. " (Mt 13:33; Lu 13:20, 21 ) The Scriptures do indicate that corruption of truth would be brought about by individuals professing to be in line for membership in the heavenly Kingdom. - Ac 20:29, 30; 1 Ti 4:1-3.
Source : 🇺🇸 1988 - Insight on the Scriptures, Vol.2, page 230 + Cover
⚫ It symbolizes something positive
Read Matthew 13:33. What is the meaning of the illustration of the leaven? This illustration also refers to the Kingdom message and what it produces. [...]
Why did Jesus use this illustration?
He was showing that the Kingdom message has power to spread pervasively and to cause changes. [...] Just like the leaven in Jesus’ illustration, the Kingdom message had grown and changed the lives of many—much to the joy of the visiting couple!
Source : 🇺🇸 The Watchtower, December 15 2014, page 8, page 9 + Cover