As the initial chapters of Matthew’s Gospel indicate, Matthew labored to present the kingship of Jesus Christ. In the Sermon on the Mount in Matthew 5-7, Jesus explained how His disciples should understand the Old Testament in light of His arrival and reign. Jesus argued that since He had come to fulfill the law, His followers should practice perfect, inside-out righteousness and enjoy the Father’s blessing.
Matthew’s comment, “When Jesus had finished this sermon, the crowds were astonished at His teaching, because He was teaching them like one who had authority, and not like their scribes” (Matt 7:28-29), placed Jesus in a different class than Israel’s other teachers. The crowd’s reaction showed the supremacy of Jesus; there had never been one like Him. Jesus had not come to destroy the Law or the Prophets, but to fulfill—to show His disciples the true intent of the Old Testament witness and establish the high moral standards that accord with a relationship with the Father.
(1) In Matt 5:21-26, Jesus commanded His disciples to avoid anger the way that Moses had commanded Israel not to murder. Jesus applied the sixth commandment, “Do not murder” (Exod 20:13; Deut 5:17), to the attitudes and thoughts of His followers. Jesus warned the disciples that if they even just cursed their brother, they would be in danger of hell (Matt 5:22).
(2) In Matt 5:27-30, Jesus warned His disciples to flee from immorality and thus avoid breaking the commandment forbidding adultery. Jesus demanded that His disciples apply the seventh commandment, “Do not commit adultery” (Exod 20:14; Deut 5:18), to their eyes and heart inclinations. Extremes were in order. The commitment to follow Christ required that disciples take whatever steps necessary to avoid sexual lust.
(3) In Matt 5:31-32, Jesus cited Deut 24:1 and forbade His disciples from seeking divorce except in cases of immorality. Moses required if an Israelite man wanted to divorce his wife, he had to give her a certificate of divorce to signify that he would never take her back. Jesus later said that Moses made the certificate law as a concession to Israel’s wickedness (Matt 19:7-8//Mark 10:4-5). Jesus demanded that His followers look to the pattern of a man leaving his parents and being united to his wife (Gen 2:24) and persevere in their marital commitment according to God’s will.
(4) In Matt 5:33, Jesus cited Moses’ laws against breaking oaths as a basis for avoiding oaths altogether. In various places, Moses commanded Israel to keep their word. In Leviticus 19, Moses argued that Israel’s behavior, including truthfulness (Lev 19:18), was to reflect God’s holiness. Moses’ broader teaching about oaths in Numbers 30 also demanded that Israel keep their word (Num 30:2). The assorted commands of Deuteronomy 23 included the warning that oaths were to be taken seriously (Deut 23:21-23). Jesus’ teaching in Matt 5:33 closely reflects Moses statement in Deut 23:22. Since words matter, best to avoid swearing oaths entirely.
(5) In Matt 5:38-42, Jesus demanded that His disciples extend mercy rather than take revenge according to the law of Moses. In Exod 21:22-25, Moses commanded that if a man hit another man’s wife, the husband is free to exact judgement upon the offender just as the offender injured his wife. In Lev 24:20, Moses said that if a man permanently injured another man, the offender was to be punished with the same injury he had inflicted on the offended. In Deut 19:21, Moses established the policy that false witnesses were to be punished without mercy. Jesus’ command that His disciples to turn the other cheek, go the extra mile, give to the one who wanted to take.
(6) In Matt 5:43-48, Jesus required His followers to love their enemies. In Lev 19:18, Moses commanded Israel to love their neighbors as themselves. Jesus’ followers demonstrated God’s benevolence and perfect righteousness as they showed love to those who opposed them.
(7) In Matt 7:23, Jesus cited Ps 6:8 to warn His disciples that they would be in danger if they did not adhere to the high standards of the kingdom of God. In Psalm 6, the psalmist cried out asking God to deliver him from death and the evildoers who surrounded him. The psalmist and Jesus wanted companions that were characterized by covenant loyalty, those who would share with them in the blessings God promised to the faithful. Therefore, if at the judgement someone addressed Jesus as Lord but had not fulfilled Jesus’ laws in the Sermon on the Mount, that one would hear Jesus say, “Depart from Me, you lawbreakers” (Matt 7:23).

Matthew 8-10
Matthew’s initial description of Jesus’ Galilean ministry (Matt 4:18-25) set the stage for what readers would come to expect from Jesus through the rest of his Gospel. In Matthew 8-10, the Evangelist recounted Jesus’ mission of healing the sick and training future leaders. In the midst of all of this, Jesus dealt with those who opposed or did not understand His message. Along the way, John the Baptist’s disciples questioned Jesus about why His disciples did not fast like the Pharisees. Jesus replied that new structures were required to understand His new teaching (Matt 9:14-17//Mark 2:18-22//Luke 5:33-39). If someone put new wine into old wineskins, the wine skins would burst when the wine cured. New wine is only preserved in new wineskins, Jesus said. Jesus’ message was the new wine that could not be carried by the structures of the old covenant. Everything that had come before was now to be evaluated in light of Him. Matthew and Jesus cited Scripture as a storyline that pointed to Jesus’ ministry.
(1) In Matt 8:17, Matthew stated that Jesus’ compassion and power to heal fulfilled Isaiah’s prophecy of a suffering servant. In Isaiah 53, the prophet said that God’s servant was a rejected and despised figure. But the servant took up the sicknesses of God’s people and identified with their pain. Matthew understood Isaiah to be prophesying not only about Jesus’ suffering and death but even the days of Jesus’ life. Jesus’ acts of compassion upon those affected by sin and disease—taking their pain upon Himself—was a precursor to the time when He would defeat sin and death on the cross. Matthew commented, “He drove out the spirits with a word and healed all who were sick, so that what was spoken through the prophet Isaiah might be fulfilled: ‘He himself took our weaknesses and carried our diseases’” (Matt 8:16b-17).
(2) In Matt 9:13, Jesus quoted Hos 6:6 to validate His willingness to dine with those thought unclean. In Hosea 6, the prophet confronted Israel because they were spiritually shallow. Israel participated in sacrifice and burnt offerings—but that was it. Israel’s religious practices were not based on a true knowledge of God. Hosea indicted Israel for unfaithfulness to God (vertical unfaithfulness); Jesus condemned the Pharisees for horizontal unfaithfulness to people. Jesus chose His disciples from among the classes that were far out of the reach of the Jewish elite, people like Matthew and his tax-collecting comrades (Matt 9:9-13). When the Pharisees chastised Jesus for associating with sinners, Jesus quoted Hos 6:6, saying, “Those who are well do not need a doctor, but the sick do. Go and learn what this means: ‘I desire mercy and not sacrifice.’ For I didn’t come to call the righteous, but sinners” (Matt 9:12-13). Jesus thus expanded Hosea’s indictment of Israel and condemned the Pharisees for not helping sinners to know of God’s mercy—and expand God’s kingdom.
(3) In Matt 10:35-36, Jesus employed Mic 7:6 to describe the weighty relational demands of discipleship in His kingdom. Micah noted that during the Assyrian invasion of Israel (2 Kings 17), a person could not find a faithful companion even in his own family. Jesus told His disciples, “The harvest is abundant, but the workers are few. Therefore, pray to the Lord of the harvest to send out workers into His harvest” (Matt 9:37-38). He then commissioned them to scatter and spread throughout Israel the news of the kingdom. Jesus required His disciples to evaluate all human relations in light of the kingdom. Echoing Mic 7:6, Jesus said, “I came to turn a man against his father, a daughter against her mother, a daughter-in-law against her mother-in-law; and a man’s enemies will be the members of his household” (Matt 10:35-36). According to Jesus, faithfulness in the kingdom required willingness to lay down one’s life. Jesus said, “Anyone finding his life will lose it, and anyone losing his life because of Me will find it” (Matt 10:39).
Commentary Matthew New Testament