And a certain ruler asked him
 A young man, ( Matthew 19:20 ) a ruler among the Jews, a civil magistrate, and a very rich man; he ran after Jesus, and overtook him in the way, as he was going towards Jericho, ( Mark 10:17 ) 
 saying, good master;
 "Rabbi"; or doctor, 
 what shall I do to inherit eternal life?
 (See Gill on Matthew 19:16).