What I tell you in the darkness, speak in the light, and what you hear in the ear, proclaim on the rooftops.
In this saying, Jesus urges his disciples to spread the word of God openly and with boldness. What is meant by “in the dark” refers to the private teachings that the disciples received from Jesus, away from the public eye. What they learned in private instruction is commanded to be proclaimed publicly, “in the light,” hiding nothing. “Preaching on the rooftops” expresses the idea that one must preach in a way that can be heard by a great number of people. This saying emphasizes that the message of the Gospel has universal significance, is meant to be sounded openly before everyone, and is called to enlighten the whole of human life.