Leaven is a substance like yeast that is used to make bread rise.

Positive: Dreaming of leaven or leavened bread could symbolize having a positive and light spirit. It could also represent life or teaching.

Negative: Leaven could also symbolize having an evil spirit or having an attitude, anger, pride, or sin. It could mean hypocrisy and false doctrine. Leaven could indicate self-justification, self-righteousness, or self-importance.

(1 Corinthian 5:8; Mark 2:13; Mark 14:6-9; Mark 8:15; 1 Corinthians 5:6).