here are many meanings of the olive tree. It is a symbol of friendship and reconciliation, cleansing and healing, light, victory and richness and, above all, a sign of peace. It is a plant which should be treated with reverence as it holds many spiritual gifts.Olive leaf is used for antioxidant, anti-inflammatory, and antimicrobial. Olive leaves contain a substance called oleuropein, which is thought to help reduce cholesterol levels and inflammation. Olive leaf extracts (OLE) also reduce glucose levels in the blood. Laboratory studies found that OLE can kill a number of microorganisms including yeasts, bacteria, and fungi.