Keeping God's Holy Days in the Spring

Should YOU keep God's festivals? Was a purpose of the moon to mark off God's festivals? Which occur in the Spring? What about Passover, Days of Unleavened Bread, and Pentecost? How about Lent and Easter? What days are mentioned in the Bible? Which days did early Christians keep? What did Martin Luther King, Jr. write about Greek Easter practices and Eleusinian Mysteries paganism (Demeter goddess). What does leaven represent? Are Christians to examine themselves prior to Passover? What if your family members are not COG supporters? Is Easter supposed to be Passover? What is leaven? What foods contain leaven that the Bible says are to be removed for seven days? Can unleavened bread be made with corn? What about the Night to be Much Observed and the Wave Sheaf Offering? Dr. Thiel cites scriptures and historical references related to which holy days Christians should keep in the Spring?