Leaven ... may be sure that the tiny morsel of yeast will penetrate ... which is turned from dough into leaven, are taught ... let me remind you there are other ways, subsidiary ... //christianbookshelf.org/maclaren/expositions of holy scripture b/leaven.htm
Nave's Topical Index
1 Corinthians 5:6-8 Your glorying is not good. Know you not that a little leaven leavens the whole lump? Nave's Topical Index
Galatians 5:9 A little leaven leavens the whole lump. Nave's Topical Index