A young rich man approached and asked the Lord Jesus Christ what he needed to do in order to inherit God's kingdom. The man revealed to Christ his obedience to the Ten Commandments, wondering whether his deeds were sufficient for him to merit salvation in heaven. In response to his question, Jesus pointed out where the rich young man fell short of God's glory, namely his lust for material possessions. He was comparing the faults in the character of the rich man’s morality to a standard of perfection. In other words, Jesus Christ was saying that things are only possible through the grace of God. The wealthy youth failed to recognize Christ's deity. Moreover, it is important to recognize how God is connected with goodness and also that Jesus is good in other passages of Scripture (Mark 1:23-25; John 10:11-18). Are Unitarians willing to say that Jesus Christ is not good?
In his book titled The Doctrine Of The Trinity, pages 18-19, Richard N. Davies States:
“Christ said to a certain ruler: "Why callest thou me good? there is none good but one, that is, God." (Mark x, 17, 18.) Christ did not deny that he himself was "good," nor did he deny that he himself was God; but the ruler had not acknowledged him to be God, and our Lord's question to the ruler was based upon that fact. It was as much as to say, As you do not confess me to be God, why call me good? Our Lord said: "There is none good but one, that is, God." It would follow from this that whoever is perfectly good must be God; but our Lord is perfectly, infinitely good, hence must be God...The dilemma, as regards the Socinians, has been well put (see Stier II, 283, note), either, 'There is none good but God; Christ is good; therefore Christ is God;' or, 'There is none good but God; Christ is not God; therefore Christ is not good.' "
Consider this excerpt from the King James Version Bible Commentary, Matthew 19:13-17, page 1213:
“…Calling Jesus Good Master, which the Savior challenged, not as a denial of His deity, but to impress upon this seeker the seriousness of the implication. “Are you really sure of that?” would be a modern paraphrase. The young man’s question, What good thing shall I do? implies that he wanted to perform some work that might gain him eternal life (salvation). Jesus’ challenge was intended to elevate his concept of “good”. The glib comment “good master” is followed by a request for something “good” that he may do to gain heaven. Jesus’ concept of good was that which is divine. Therefore, only an act of God could grant eternal life.”