“The trees of the Lord are full of sap.” -Psalm 104:16
Without sap the tree cannot flourish or even exist. Vitality is essential to a Christian. There must be life—a vital principle infused into us by God the Holy Spirit—or we cannot be trees of the Lord. What a secret thing the sap is! The roots go searching through the soil, but we cannot see them transform the mineral into the vegetable. This work is done down in the dark. Our root is Christ Jesus, and our life is hid in Him. This is the secret of the Lord. In the Christian, the divine life is always full of energy.