Faith in Christ feeds on Christ. It nurses on His Word, His forgiveness, His Supper. Faith hungers and thirsts for Christ's righteousness. Faith is like a thirsty deer, panting for a cool mountain stream of refreshing water. Faith is like a beggar with empty hands outstretch seeking mercy.
Faith is like dry, parched earth that eagerly soaks up the rain that falls on it.
Faith is like a hungry newborn craving the pure spiritual milk of its mother. Faith in Christ craves the pure spiritual milk of its mother, holy Church, and the rich forgiveness, life, and salvation that come in the Name of Jesus through the Word preached and through the Sacrament. When Peter preached to the people who were gathered at the temple for evening prayer, he promised refreshment in the Name of Jesus. Repent, therefore, and turn again, that your sins may be blotted out, that times of refreshing may come from the presence of the Lord. Refreshment here means more than a cold drink on a hot day.