17 Think not that I am come to make void the law or the prophets; I am not come to make void, but to fulfil. 18 For verily I say unto you, Until the heaven and the earth pass away, one iota or one tittle shall in no wise pass from the law till all come to pass. 19 Whosoever then shall do away with one of these least commandments, and shall teach men so, shall be called least in the kingdom of the heavens; but whosoever shall practise and teach [them], he shall be called great in the kingdom of the heavens.
Matthew Henry's Commentary on Matthew 5:17-19
Commentary on Matthew 5:17-20
(Read Matthew 5:17-20)
Let none suppose that Christ allows his people to trifle with any commands of God's holy law. No sinner partakes of Christ's justifying righteousness, till he repents of his evil deeds. The mercy revealed in the gospel leads the believer to still deeper self-abhorrence. The law is the Christian's rule of duty, and he delights therein. If a man, pretending to be Christ's disciple, encourages himself in any allowed disobedience to the holy law of God, or teaches others to do the same, whatever his station or reputation among men may be, he can be no true disciple. Christ's righteousness, imputed to us by faith alone, is needed by every one that enters the kingdom of grace or of glory; but the new creation of the heart to holiness, produces a thorough change in a man's temper and conduct.