Why should YOU study the Hebrew calendar? One of the major identifying signs of the Church of God is the observance of the Sacred Festivals. As you study the twenty-third chapter of Leviticus, you will notice that God employed a calendar to indicate when each holy day must be properly kept during the year. The Jews were given the responsibility of preserving that calendar for the rest of the world. Since it is the responsibility of the Church to announce the time of each festival to the congregations, detailed understanding of the Hebrew calendar is not even necessary for a lay church member. When a holy day is to be kept is not for the individual Christian to decide.