Leviticus 7:13
In addition to these rings of bread, you must bring leavened bread (with yeast) along with your fellowship offering of thanksgiving.
Amos 4:5
Offer a sacrifice of thanksgiving of that which is leavened. Proclaim freewill-offerings and make them known. This pleases you, O you children of Israel, said the Lord Jehovah.
Leviticus 23:17
Bring two loaves of bread from your homes to present to Jehovah. Bake them with four quarts of flour. They are the first harvested grain for Jehovah.
Matthew 13:33
He offered another illustration: The kingdom of heaven is similar to leaven. A woman hid leaven in three measures of meal until it was all leavened.
1 Timothy 4:4
For every creature of God is good, and nothing is to be rejected, if it is received with thanksgiving.