Luke 18:37 Meaning

35And it came to pass, that as he was come nigh unto Jericho, a certain blind man sat by the way side begging:

36And hearing the multitude pass by, he asked what it meant.

37And they told him, that Jesus of Nazareth passeth by.

38And he cried, saying, Jesus, thou Son of David, have mercy on me.

39And they which went before rebuked him, that he should hold his peace: but he cried so much the more, Thou Son of David, have mercy on me.