Most have always thought that leaven was a symbol for sin only. Leaven is a symbol of spirit, good or evil. Consider the following; Leviticus 23:17 2 loaves represent the church before and after Christ. They are baked with leaven to symbolize being leavened with the Holy Spirit. The first fruits are the church. Matthew 13:33 the kingdom of God is LIKE LEAVEN. The woman is the church and the three measures of meal represent the church now, the church in the millennium and finally the second resurrection. Leaven symbolized the Spirit of God or Spirit of Satan and we need to purge out the old leaven of Satan to become a new lump leavened with the Spirit of God. 1 Corinthians 5:8. Jesus is the bread from heaven. After his resurrection Jesus in Luke 24:30 blessed and broke bread, the Greek word “Artos” is the word for bread. Strongs article G740 and is loaf of bread that must have leaven to be a loaf. Jesus did this during the days of unleavened bread thus showing he was the fulfillment of those shadow days.