Isaiah 6 is often remembered for the prophet’s willingness to serve God. But willingness is only part of the story. Isaiah offers himself before he knows what his ministry will involve. Then he discovers that his preaching will meet resistance, deepen Judah’s hardness, and announce a judgment that God has already determined.
That makes this chapter more demanding than an inspirational message about finding your purpose. It asks a harder question: Will you serve God because of who he is and what he has done, even when the work is difficult and the results are not what you hoped?
To understand Isaiah’s commission, we need to hold together three things: God’s holiness, his mercy toward sinners, and his authority over the outcome. Separate them, and the chapter becomes either discouraging or sentimental. Keep them together, and even its darkest passages contain hope.