Speak up, they are blind.
Luke 18:38 And he cried, saying, Jesus, thou son of David, have mercy on me.
As Jesus passed by, the cry of this blind man entered the ears of the Lord and caused Him to stop. This man could not see the Lord due to his condition, yet someone (Luke 18:36-37 And hearing the multitude pass by, he asked what it meant. And they told him, that Jesus of Nazareth passeth by) told him about Jesus.
We work in the midst of the blind, would they cry out for Jesus because of our conversation? The only way that he received his sight is because someone spoke up. When he heard the name Jesus, there’s just something about that name! He CRIED for mercy!