Telling the Truth: A Testimony to *The* Truth (Matthew 5:33-37)

In Matthew 5:33-37, Jesus continues to define the righteousness of his kingdom in the context of personal relationships. In previous verses, He addressed the issues of murder and adultery with their accompanying heart motivations: anger and lust. According to Jesus, true righteousness is not simply avoiding outward expressions of sin such as murder and adultery. True righteousness is doing the hard work of repenting of the sin in our hearts (such as lust and anger), loving what is pleasing to God, and by the power of the Spirit, seeking to live that out in our lives.

In this passage (5:33-37), Jesus transitions from pursuing righteousness in marriage relationships to pursuing righteous speech in all our relationships,

Again, you have heard that the ancients were told, ‘You shall not make false vows, but shall fulfill your vows to the Lord.’ But I say to you, take no oath at all, neither by heaven, for it is the throne of God, nor by the earth, for it is the footstool of His feet, nor by Jerusalem, for it is the city of the Great King. Nor shall you take an oath by your head, for you cannot make a single hair white or black. But make sure your statement is, ‘Yes, yes’ or ‘No, no’; anything beyond these is of evil origin.”[1]

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A Thirst for Righteousness: The Antidote to Lust, Adultery, & Divorce (Matthew 5:27-32)

Last week we looked at the subject of anger in Matthew 5:21-26. The main idea was that true righteousness is not characterized by outward behavior but a pure heart. Therefore, simply avoiding murder isn’t a defining mark of righteousness, but cleansing our hearts from underlying anger and putting on love, forgiveness, and compassion is. This is the kind of righteousness that Jesus is calling us to. It is the righteousness that the Spirit will create in the members of God’s kingdom.

In this section of the Sermon on the Mount, Jesus describes what true righteousness looks like in the context of personal relationships. To do that, he quotes the law and shows where the religious leaders only obey the tradition at the surface level. But he also reveals how the principle should be obeyed at the heart level, where almost all of us stand guilty. This is exactly what he did with murder, revealing that the heart behind murder is anger. Thus, anyone who is angry is, in some sense, guilty of murder. This revelation is painful, but we must remember that the righteousness described in the SM is not a prerequisite for salvation. We are saved by Jesus, who has paid the penalty for our unrighteousness and has given us his righteousness. He has also cleansed our hearts and given us his Spirit, by whom he will flesh out the righteousness that the SM speaks of in our lives.

In Matthew 5:27-32, Jesus continues his discourse on relationships by addressing the relationship of marriage. What does true righteousness look like in the relationship between husband and wife? Jesus points to two aspects of the law to answer that question: adultery and divorce.

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Murder in the Heart: Jesus’ Teaching on Anger (Matthew 5:21-26)

In Matthew 5:17-20, Jesus begins his commentary on the traditions of the Law by defining his relationship to the Law. His definition is staggering. Not only does he claim that he did not come to abolish the Law, nor that he has perfectly kept the Law, but that he is the fulfillment of the Law.

What does this phrase mean? It means that the Law points to and culminates in Jesus. It means that he is the righteousness that the Law points to. It means that his life and his work are the epitome and the completion of the Law. He himself, who he is and what he does, is the fulfillment of the Law.

As the Law’s fulfillment, Jesus can free his people from the demands of the law (Galatians 3:24) and enable them to live in accordance with the true intention of the Law. What is that true intention? To possess a genuine righteousness that is a light to the world and brings glory to God (Matt 5:6, 14). This righteousness, Jesus says, must far surpass that of the scribes and Pharisees (Matt 5:20). How can it do that? Because it is a different kind of righteousness altogether.

In Matthew 5:21-47, Jesus begins to unpack the meaning of the true righteousness of the Law in the context of relationships. This should not surprise us, because Jesus himself describes the law as loving God and loving our neighbor. The two go hand in hand! Consider 1 John 4:20, “If anyone says, ‘I love God,’ but hates his brother, he is a liar.”

Jesus begins by quoting the law and confronting the religious leaders’ surface-level adherence to them. I believe He does this for three reasons. First, to expose the false righteousness of the Scribes and Pharisees. Second, to help us be poor in spirit by revealing our lack of true righteousness. And third, to motivate his people to pursue true righteousness (i.e. to be those who ‘hunger and thirst’ for it; Matt 5:6). Let’s consider these reasons in light of murder and anger in 5:21-26.

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