3:81 God took a covenant from the prophets: "For what I have given you of the book and wisdom, then a messenger will come to you authenticating what is with you. You will acknowledge him and support him." He said, "Do you testify, and agree to this burden?" they said, "We testify." He said, "Then bear witness, and I am with you bearing witness."
How did RK authenticate existing scripture? can RK followers explain this a little bit thoroughly
The Quran was sent to verify (musaddiqun) previous Books: Surah 3:81, 42:52, 5:48, 2:41, 2:89, 2:91, 2:101, 3:03, 6:92
"And when (Wa-ith) God took (akhatha Allahu) Compact of the Prophets (meethaqa alnnabiyyeena): 'That I have given you of Book and Wisdom; then there shall come to you a Messenger verifying (musaddiqun) what is with you -- you shall believe in him and you shall help him; do you agree?' He said. 'And do you take My load on you on that condition?' They said, 'We do agree.' God said, 'Bear witness so, and I shall be with you among the witnesses.'" Surah 3:81
"Wa-ith akhatha Allahu meethaqa alnnabiyyeena lama ataytukum min kitabin wahikmatin thumma jaakum rasoolun musaddiqun lima maAAakum latu/minunna bihi walatansurunnahu qala aaqrartum waakhathtum AAala thalikum isree qaloo aqrarna qala faishhadoo waana maAAakum mina alshshahideena" Surah 3:81
This Compact - promise, agreement - is with those who inherited the Book, for the Messengers of Allah verified the Book that was with them.
"And when God took compact (meethaqa) with those who had been given the Book: 'You shall make it clear unto the people, and not conceal it.' But they rejected it behind their backs and sold it for a small price -- how evil was that their selling!" Surah 3:187
The Quran verifies previous Books."And We have sent down to thee the Book with the truth, verifying (musaddiqan) the Book that was before it, and assuring it. So judge between them according to what God has sent down, and do not follow their caprices, to forsake the truth that has come to thee. To every one of you We have appointed a right way and an open road. If God had willed, He would have made you one nation; but that He may try you in what has come to you. So be you forward in good works; unto God shall you return, all together; and He will tell you of that whereon you were at variance." Surah 5:48
"This is a Book We have sent down, blessed and verifying (musaddiqu) that which was before it, and for thee to warn the Mother of Cities and those about her; and those who believe in the world to come believe in it, and watch over their prayers." Surah 6:92
"He has sent down upon thee the Book with the truth, verifying (musaddiqan) what was before it, and He sent down the Torah and the Gospel." Surah 3:3
"When there has come to them a Messenger (rasoolun) from God verifying (musaddiqun) what was with them, a party of them that were given the Book reject the Book of God behind their backs, as though they knew not," Surah 2:101
"And believe in that I have sent down, verifying (musaddiqan) that which is with you, and be not the first to disbelieve in it. And sell not My signs for a little price; and fear you Me." Surah 2:41
Surah 33:7-8 speaks of the Covenant and Compacts taken by those sent the Messengers;
an agreement Allah takes with all who submit their will to Him:
"And remember God's blessing upon you, and His compact (wameethaqahu) which He made with you when you said, 'We have heard and we obey' . And fear you God; surely God knows the thoughts in the breasts." Surah 5:7
"And when We took from the Prophets (mina alnnabiyyeena) compact (meethaqahum), and from thee, and from Noah, and Abraham, Moses, and Isa, Mary's son; We took from them a solemn compact (meethaqan) that He might question the truthful concerning their truthfulness; and He has prepared for the unbelievers a painful chastisement." Surah 33:7-8 Surah 33:7-8
Covenant and Compact of the Book and Prophets: Surah 2:27, 2:63, 2:83-84, 3:77, 3:81, 3:187, 5:7, 5:12-14, 5:70, 6:152, 7:169, 13:20, 13:25, 16:91, 16:95, 17:34, 19:78, 33:15, 33:23, 48:10, 57:8
Compact/agreement (meethaqan): 4:21, 4:90, 4:92, 8:56, 8:72, 12:66, 12:80
"And We took compact (meethaqa) with the Children of Israel, and We sent Messengers (rusulan) to them. Whensoever there came to them a Messenger (rasoolun) with that their souls had not desire for, some they cried lies to, and some they slew." Surah 5:70
"And there succeeded after them a succession who inherited the Book, taking the chance goods of this lower world, and saying, 'It will be forgiven us'; and if chance goods the like of them come to them, they will take them. Has not the compact of the Book (meethaqu alkitabi) been taken touching them, that they should say concerning God nothing but the truth? And they have studied what is in it; and the Last Abode is better for those who are godfearing. Do you not understand?" Surah 7:169
"And those who break the Covenant of God (AAahda Allahi) after His compact (meethaqihi), and who snap what God has commanded to be joined, and who work corruption in the earth -- theirs shall be the curse, and theirs the Evil Abode." Surah 13:25
"How is it with you, that you believe not in God seeing that the Messenger is calling you to believe in your Lord, and He has taken compact (meethaqakum) with you, if you are believers?" Surah 57:8
"God took compact (meethaqa)with the Children of Israel; and We raised up from among them twelve chieftains. And God said, 'I am with you. Surely, if you perform the prayer, and pay the alms, and believe in My Messengers and succour them, and lend to God a good loan, I will acquit you of your evil deeds, and I will admit you to gardens underneath which rivers flow. So whosoever of you thereafter disbelieves, surely he has gone astray from the right way. "
So for their breaking their compact (meethaqahum) We cursed them and made their hearts hard, they perverting words from their meanings; and they have forgotten a portion of that they were reminded of; and thou wilt never cease to light upon some act of treachery on their part, except a few of them. Yet pardon them, and forgive; surely God loves the good-doers.
And with those who say 'We are Christians' We took compact (meethaqahum); and they have forgotten a portion of that they were reminded of. So We have stirred up among them enmity and hatred, till the Day of Resurrection; and God will assuredly tell them of the things they wrought." Surah 5:13-14
"So, for their breaking the compact (meethaqahum), and disbelieving in the signs of God, and slaying the Prophets without right, and for their saying, 'Our hearts are uncircumcised' -- nay, but God sealed them for their unbelief, so they believe not, except a few --" Surah 4:155
The Quran sent for all nations/beings: Surah 3:108, 6:90, 12:104, 21:107, 25:1, 38:87, 68:52, 81:27, 34:28, 7:158, 33:40, 4:170, 47:33, 4:80, 61:9, 21:107, 4:79-80
Allah perfected the deen of Al-Islam during the time of Muhammad (pbuh): Surah 3:19, 3:85, 5:3, 6:125, 9:74, 21:92, 39:22, 49:17, 61:7
There is no need for further Messengers as we still have the Truth with us today.
"Those who listen to the word, then follow the best of it; those are they whom Allah has guided, and those it is who are the men of understanding." Surah 39:18
Peace.