Dietrich Bonhoeffer, echoing Matthew 5:13-16:

Discipleship is as visible as light in the night, as a mountain in the flatlands.

To flee into invisibility is to deny the call.

Any community of Jesus which wants to be invisible is no longer a community that follows him.

—Discipleship, trans. B. Green and R. Krauss (Minneapolis: Fortress, 2001), 113.

HT: Grant Osborne, Zondervan Exegetical Commentary on Matthew, p. 176.