Leaven See also Example; Jesus Christ, Exemplar; BDÂ Leaven Seven days shall ye eat unleavened bread, Ex. 12:15. neither shall there be leaven seen with thee, Ex. 13:7. not offer the blood of my sacrifice with leaven, Ex. 34:25 (Lev. 2:11). It shall not be baken with leaven, Lev. 6:17 (23:17). Thou shalt eat no leavened bread with it, Deut. 16:3. offer a sacrifice of thanksgiving with leaven, Amos 4:5. kingdom of heaven is like unto leaven, Matt. 13:33 (Luke 13:21). Take heed and beware of the leaven of the Pharisees, Matt. 16:6 (Mark 8:15; Luke 12:1). a little leaven leaveneth the whole lump, 1Â Cor. 5:6 (Gal. 5:9). let us keep the feast, not with old leaven, 1Â Cor. 5:8.