When Jesus says only One is good he means
God is goodness itself, which means that God’s law reflects God’s goodness.
the man thoughtlessly flatters Jesus, so Jesus encourages him to consider the meaning of goodness.
When a young man asks Jesus what good deed he might do to have eternal life, Jesus explains that there is only one who is good. What does he mean when he says this?
When he says there is only one who is good, his point is that God is goodness itself. We can deduce this by considering the exchange between the man and Jesus. The man asks Jesus what good deed he must do to have eternal life, revealing that he does not understand the nature of goodness. Jesus wants the man to understand that there is no good deed that is good in itself in the sense that, by doing it, one might have eternal life. Rather, there is only One who is good in itself, and that is God. God is the good, so that when God commands us to do something, it is good for us to do it.
We also notice that by explaining to the man there is only one who is good, Jesus echoes the Shema, found in Deuteronomy 6:4 where it says that God is one. The Jews would have recited the Shema on a regular basis, and Jesus is here explaining to the man what the Shema means. Specifically, it not only means that God is one in the sense that there is only one God, but it means that God is unique in the sense that only God is goodness itself.
Some notice that Mark and Luke also recount the story of the rich young man asking Jesus what he can do to have eternal life. In Mark’s account, the man does not ask Jesus what good deed he must do, but instead, calls Jesus good teacher.
Jesus then responds that no one is good except God alone. Thus, some argue, that although Matthew does not include these details in the story, we should try to understand Jesus’ response in light the fact that in Mark, the man calls Jesus good teacher.
Likely, the man thoughtlessly flatters Jesus by calling him good,
so Jesus responds by pointing him to the One who alone is good, God himself. In other words, Jesus wants the man to reflect on the nature of goodness before thoughtlessly flattering people.
The issue with this interpretation is that it interprets Matthew in light of Mark. Our task as exegetes is to understand Matthew’s meaning based on how he formulates things. This means interpreting Jesus’ response to the man in light of the context of Matthew, not Mark. Since Matthew does not include the fact that the man calls Jesus good teacher,
we should not interpret Matthew 19:17 with this phrase in mind. By interpreting the text within the context of each writer, we benefit from the depth of Jesus’ teachings, as each writer sometimes highlights a different aspect of his ministry.
Thus, when Jesus says that there is only one who is God, he means that God is goodness itself. Since God is goodness itself, his laws reflect his goodness.
Interpretation 1:
God is goodness itself, which means that his law reflects his goodness.
Summary:
A rich young man asked Jesus what good deed he might do to have eternal life. Jesus quickly calls the man to a higher plane of thinking. God is goodness itself, which means that things are only good insofar as they reflect God. Since God’s law preserves the will of God, the law of God reflects the goodness of God.
Humans are obliged to certain duties. For example, humans are not to murder, steal, or commit adultery. So why is it good for us to uphold these duties? It’s good to uphold these duties because they originate with God, and God is goodness itself. So when he commands something, his command is good.
Advocates:
Donald Carson
Ulrich Luz
John Nolland
David Turner
Minor differences:
Our authors agree that Jesus wants the young man to understand that God is goodness itself. Therefore, every command that God establishes reflects his goodness. The commands themselves are not the good, but God is the good.
David Turner offers two reasons for Jesus’ answer. He contends that either the man was focused on his own goodness and failed to recognize God’s goodness, or Jesus wants to imply that the law reflects God’s goodness.1 Ulrich Luz agrees that Jesus is pointing the man to recognize God’s goodness, but he also seems to hold that the essence of goodness is God’s law. Luz writes, Thus Jesus does not have something to add to what to this point in Judaism has been regarded as the essence of the good. Instead, he fulfills the Law and the Prophets.
2 If we were to press Luz on the way he frames the issue, he might run into a conflict. For it is hard to see how both God and the law could be the essence of goodness. Rather, Jesus’ point seems to be that the essence of goodness is God himself, and therefore anything God commands is good.
Donald Carson gets at the heart of the scenario when he explains that by asking what good he must do to enter the kingdom, the man is suggesting that there is something good beyond God. Jesus corrects his thinking by explaining that God himself is the good, which means there is nothing beyond God’s will for the man to do.3
Arguments
Interpretation 2:
The man thoughtlessly flatters Jesus, so Jesus encourages him to consider the meaning of goodness.
Summary:
When a rich young man asks Jesus what good deed he must do to have eternal life, it is important to recognize that this same story is found in Mark and Luke. In Mark, the man calls Jesus the good teacher, so we should consider the meaning of the passage in light of Mark’s account. Likely, the man thoughtlessly flatters Jesus by calling him good, so Jesus encourages the man to actually consider the meaning of goodness.
Advocates:
Leon Morris
Arguments
17 And he said to him, “Why do you ask me about what is good? There is only one who is good. If you would enter life, keep the commandments.”