The use of mechanical instruments of music in Christian worship is authorized by the Bible

My opponent assumes that the verses Matt. 5:17-20; Matt. 7:12; Rom 6:14-15 prove that the Old testament is still in force today thus proving that instrumental music is authorized in Christian worship. Well, what about we examine these verses carefully if it does so. Matthew 5:17-20 “Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfill.For verily I say unto you, till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled…” My opponent is saying Jesus came to continue the Old Testament Law or that he came to add some laws to the old one. No it’s not so! Jesus, in Matt. 5:18 said God’s word cannot be changed or altered till the earth and heavens pass unless God himself fulfills His word. To fulfill never means to add or continue. Webster defines fulfill as to carry out a promise, to a duty, to satisfy a condition, to bring to an end, to complete. Jesus fulfilled the law (genesis –Deuteronomy) when the promises and the prophecies written therein came true in Him-even His death, Burial, Resurrection and Ascension. It is said in Luke 24:44-45 that after Christ had risen from the dead, He appeared to His disciples in a room and said to them that all things which were written concerning Him in the Law of Moses, prophets and Psalms must come true. Let us study the Law, the prophets, and psalms to see whether Christ had fulfilled those things concerning Him. I would like to give you two examples on each for time and space sake. Now concerning the Law: God promised Abraham, “And in thy seed shall all the nations of the earth be blessed; because thou has obeyed my voice.”(Gen 22:18). So, let’s go straight to a verse which says Jesus is the seed of Gen 22:18. If we see it, then, Jesus has fulfilled the Law (Moses, five books). Gal. 3:16: “Now to Abraham and his seed were the promises made. He saith not, And to seeds, as of many; but as of one, And to thy seed, which is Christ.” Deut. 18:15 says, “Jehovah thy God will raise up unto thee a prophet from the midst of thee, of thy brethren, like unto me; unto him ye shall hearken;” It is the New testament which teaches the fulfillment of this prophecy in Acts 3:19-26 that Christ is the prophecy who Moses spoke of. Now concerning the Psalms: (1) Pls. read Psalms 22:18 and read how it was fulfilled in John 19:23-24 (2) David spoke of Jesus in Psalms 16:10. We can know the fulfillment from Mark 16:6-7. Read also Acts 2:22-28; Eph. 4:8; I Cor. 15:4. Did he come to destroy the Psalms? No. Now concerning the Prophets. The messianic Prophet Isaiah prophesied concerning Jesus the Messiah in Isa. 53:6-8. Christ Jesus our lord fulfilled this prophecy when he was before Pontius Pilate in Mark 15:3,5. Read also Acts 8:29-35. The prophet Micah also prophesied concerning the Messiah in Micah 5:2. Matthew recorded the fulfillment in Matt. 2:5-6. There are so many prophecies in the Law (Genesis-Deuteronomy), Psalms and the Prophets fulfilled in Christ. Have you now understood what Jesus meant when he said, “I am not come to destroy, but to fulfill”? Matthew 7:12 My opponent has misinterpreted this verse as what he have done to the others. This verse merely denotes the sum or substance of the Old Testament. And it’s thought does not say the old testament is still in force. Rom. 6:14-15 This merely says that we should not abuse our high and holy calling because we are not under that law which makes no provision for pardon, but are under that Gospel which has opened the fountain to wash away all sin and defilement. And my opponent made a false claim that “ he did not change the law itself” which is a direct contradiction to Jeremiah 31:31-34 and Heb. 10:9 etc. My opponent is very confident in his contention in the psalms. If that is so, then he must also concede to the fact that we must also have burnt sacrifices, kill false teachers, incense Psalms 69:24,28;Psalms 66:13,15; Psalms 141:2 . See the fatal consequences when we follow my opponent’s doctrine. Because of lack of time i will further elaborate my arguments in the next round