1. Theological significance. Sunday is a gift of God’s grace. Even the natural elements contained in Sunday were planted in man’s nature by the Creator. The seven-day rhythm emerged through the combination of man’s spiritual urge towards order and his biological and psychological needs. Similarly, the duty to worship God is part of being a creature. According to Jewish belief, the holiness of the Sabbath stemmed from the Sabbath in Paradise, when man could renew his strength and lay before God in …