PROF. DR. B.B. WARFIELD (Biblical Doctrines 297f): "The whole Law in all its details, down to its smallest minutiae, remains permanently in force and shall be obeyed…in undiminished authority so long as the world lasts…. The Law will never be abrogated, not even in the slightest of its particulars. Jesus declares that while the 194 Matt. 5:46c. 195 Matt. 5:47a, implicitly. 196 Matt. 5:47b. 197 Matt. 5:47c, ouchi kai hoi ethnikoi, "heathen," thus most manuscripts, cf. Rom. 2:14ff. 198 Col. 2:8-9 cf. Ex. 34:4-7. 199 Westminster Confession 19:1-2, 5, 7 cf. Eccl. 7:29; Rom. 2:14-15; Ex. 20:1ff; John 8:58; Rom. 8:3-4; Matt. 5; Eph. 4:24. 200 Matt. 5:48 cf. Col. 3:8, 14 and I John 3:1,3,4,5,9,10,12,22, etc. Matt. 5:48 says we must be "perfect" (teleioi), as our heavenly Father is "perfect" (teleios). Compare with this the notion of the Law being fulfilled (pleeroosai), back in Matt. 5:17.
world lasts no jot or tittle of the Law shall pass away until they all, all the Law's merest jots and tittles, shall be accomplished…. The words are very emphatic. The 'all' — standing in correlation with the 'one' of the 'one jot' and 'one tittle' — declares that all the jots and all the tittles of the Law shall be accomplished…. A time shall come when in this detailed perfection, the Law shall be observed…. In accordance with Jesus' instruction we ask 'Thy Kingdom come; Thy will be done as in Heaven so on Earth!' So far from coming to abrogate the Law, He comes then to get the Law kept -not merely to republish it in…its most deeply cutting and widely reaching interpretation but to reproduce it in actual lives [and] to write it on the hearts of men and in their actual living…. His purpose in coming is not accomplished in merely completing the Law. It finds its fulfilment in bringing men completely to keep the completed Law."