ANSWER: Jesus is saying that He did not come for the purpose of destroying the law and the prophets (Old Testament). His purpose was to fulfill it! He further stated that nothing would pass from the law (Old Testament) until that time when all of it would be fulfilled. That time came when He died on the cross. At that time all of the Old Testament was fulfilled or filled full. Upon its fulfillment, it had served its purpose of bringing man unto Christ (Galatians 3:24-25). Because it had served it’s purpose, it was, at that time, taken out of the way (Colossians 2:14). It was nailed to the cross in His death (Colossians 2:14)! When Christ (the Testator) died, His New Testament became effective (Hebrews 9:16-17), “a better covenant, which was established upon better promises, for if that first covenant (Old Testament) had been faultless, then should no place have been sought for the second” (New Testament) - (Hebrews 8:7-8).