Isaiah 49 shows the Servant of the Lord—Jesus Christ—speaking and being spoken of as the merciful Shepherd who gathers sinners, frees prisoners, and leads His flock through a wilderness world. This sermon follows the promise that believers will “neither hunger nor thirst,” and will not be struck down by the heat, because the One who has mercy is personally guiding them by living waters. Drawing the line from Isaiah 49 to Revelation 7, it shows that Christ’s care now is a true foretaste of heaven: the same Shepherd, the same mercy, brought to full and final glory.