In Matthew 18:15-20, Jesus provides clear guidance for His followers on handling sin within the local church. Often, verses from this passage, especially verse 20, are quoted out of context to comfort small gatherings or to support unrelated prayer requests. However, when understood in their proper setting, these words reveal a profound promise: Christ stands with His church when it faithfully obeys His instructions on dealing with sin. This passage emphasises accountability, restoration, and the presence of Christ in the midst of difficult but necessary decisions.
Sin is the problem (v. 15)
The core issue addressed in this passage is sin. Jesus begins, “Moreover if thy brother shall trespass against thee,” using “trespass” as a term for sin. This is not about personality clashes, misunderstandings, or minor irritations. Sin disrupts fellowship with God and with others. The church cannot ignore sin without damaging its spiritual health. Throughout Scripture, from the Old Testament account of Achan in Joshua 7 to New Testament warnings, sin in the camp hinders God’s power and peace. A healthy church deals with sin honestly and biblically, always with humility and a recognition that we stand by God’s grace alone.
Sin is personal (v. 15)
The sin in view is personal and relational. Jesus specifies “thy brother,” indicating a fellow believer within the spiritual family. Church discipline focuses on the family of God, not on judging outsiders or policing the world. As brothers and sisters in Christ, we care enough to address sin when it appears, much like a loving family seeks to rescue one of its own from harmful choices. This personal aspect underscores spiritual maturity: caring enough to confront a brother or sister directly and lovingly.
Sin is kept private (v. 15)
Jesus instructs, “go and tell him his fault between thee and him alone.” The first step is private confrontation. The goal is restoration, not embarrassment. If repentance occurs here, the matter ends quietly: “thou hast gained thy brother.” Sins committed privately should be confessed and resolved privately. Public sins require public resolution, but the initial approach remains discreet. Love seeks quiet correction whenever possible, following examples like Nathan confronting David privately in 2 Samuel 12.
If sin remains permitted (v. 16)
If the person refuses to listen, Jesus directs, “then take with thee one or two more, that in the mouth of two or three witnesses every word may be established.” This step expands accountability while still prioritising love and privacy as much as possible. The involvement of additional witnesses follows the biblical principle of confirmation and provides further opportunity for repentance. The focus remains intervention for the good of the individual and the body.
If sin remains preferred (v. 17)
Should the person still refuse, Jesus says, “tell it unto the church: but if he neglect to hear the church, let him be unto thee as an heathen man and a publican.” When sin is preferred over repentance, the church must choose holiness over comfort. This may involve treating the individual as an outsider in terms of fellowship, as seen in 1 Corinthians 5. The aim is always restoration, but the church protects its purity by acting when necessary.
The church protects purity (vv. 18-19)
Jesus affirms, “Whatsoever ye shall bind on earth shall be bound in heaven: and whatsoever ye shall loose on earth shall be loosed in heaven.” In the context of discipline, the church’s obedient decisions carry heavenly authority. Verse 19 adds, “if two of you shall agree on earth as touching any thing that they shall ask, it shall be done for them of my Father which is in heaven.” This promise applies to agreements in line with Christ’s instructions, such as praying for an erring brother’s repentance. God affirms the church’s faithfulness in protecting purity, as illustrated in Acts 5 with Ananias and Sapphira.
The church gathered enjoys Christ’s presence (v. 20)
The well-known promise concludes: “For where two or three are gathered together in my name, there am I in the midst of them.” This verse is not about small attendance or casual meetings replacing the local church. It assures Christ’s presence when believers gather in His name to carry out His instructions on discipline faithfully. Whether in private confrontation, with witnesses, or before the whole church, Christ stands with those who courageously seek restoration while upholding holiness.
Conclusion
Jesus designed the church to love sinners enough to help them sin less, offering every opportunity for repentance while safeguarding its purity. When the church follows these steps humbly and obediently, even in uncomfortable moments, Christ promises His presence and authority. The question for every congregation is not merely how many gather, but whether Christ is truly in the midst. May we choose holiness over comfort, restoration over avoidance, and faithfulness to Scripture over convenience, trusting that when we stand for the holiness of Christ, He stands with us.
