Matthew 13:33

And he spake another parable unto them; The kingdom of the heavens is like unto the leaven, which a woman took, and hid in three measures of meal, until the whole was leavened.

1 Timothy 4:4

Because every creature of God is good, and nothing rejected, being received with thanksgiving:

Treasury of Scripture Knowledge

Summary

Besides the cakes, he shall offer for his offering leavened bread with the sacrifice of thanksgiving of his peace offerings.

Bible References

Leavened

Matthew 13:33
And he spake another parable unto them; The kingdom of the heavens is like unto the leaven, which a woman took, and hid in three measures of meal, until the whole was leavened.
1 Timothy 4:4
Because every creature of God is good, and nothing rejected, being received with thanksgiving: