Did the man embrace the lesson Jesus was teaching him? Did he confess his inability when Jesus told him, “Go and do likewise?” Did he acknowledge his need for grace, and repent?
Apparently not. That is the end of the story. Luke turns, immediately, to a different incident from the ministry of Jesus. Publicly disgraced in his failed attempt to win a verbal sparring match with Jesus, the anonymous lawyer simply disappears from the narrative and we never hear about him again. Like the typical proud, self-sufficient religious person, he might have made a resolution to double down on doing good works in order to prove himself worthy of divine favor and eternal life. Such people are oblivious to (or else they refuse to believe) what the righteousness of God really demands of them. They seek to establish their own righteousness without submitting to the righteousness God has revealed in Christ (cf. Romans 10.3). They read the parable of the good Samaritan as if it were nothing more than a mandate for humanitarianism.
From: Parables: The Mysteries of God’s Kingdom Revealed Through the Stories Jesus Told by John MacArthur (Nashville: Nelson Books, 2015), p. 94.