The Old and the New Leaven. No. 106a - The Leaven of Pentecost. No. 65

No. 106a – The Old and New Leaven
The symbolism of leaven in the New Testament is used in reference to old and new leaven. We are to remove one sort of leaven and replace it with another. This symbolism has great spiritual significance for the Christian. The Feast of Unleavened Bread is understood in this light as replacing the old leaven of malice and wickedness with the leaven of sincerity and truth. There is also leaven in the offerings at Pentecost and this has symbolism for the Church in relation to the great leaven of the Holy Spirit.
http://www.ccg.org/weblibs/study-papers/p106a.html
No. 65 The Leaven of Pentecost
The leavened loaves of Pentecost were entirely misunderstood by the Church of God in the last half of the twentieth century. The understanding of the purpose of de-leavening in order to become sons of God in power from the Resurrection of the Dead as Christ was lost for some time. The aim of this paper is to revive that understanding.
http://www.ccg.org/weblibs/study-papers/p065.html