What are the reason for writing the gospel New Testament?

Answer 1

The Old Testament bore the promise of the Christ... the New Testament testifies to its fulfillment.

The unbelief of God's "elect," the two houses of Israel, caused them to stumble, fall and be scattered. But this resulted in the closed door of their exclusivity to be opened to "all the families on earth" [Gen.26:4] to God's salvation through Christ.

"...to him who knocks, the door will be opened." (Matt.7:8 NIV)

"...The LORD spoke to me with His strong hand upon me, warning me not to follow the way of this people. He said: 'Do not call conspiracy everything that these people call conspiracy; do not fear what they fear, and do not dread it.

"The LORD Almighty is the One you are to regard as Holy, He is the One you are to fear, He is the One you are to dread, and He will be your sanctuary; but for BOTH HOUSES OF ISRAEL He will be a Stone that causes men to stumble and a Rock that makes them fall. And for the people of Jerusalem [the Jews] He will be a trap and a snare. Many of them will stumble; they will fall and be broken, they will be snared and captured.'

"BIND UP THE TESTIMONY and SEAL UP THE LAW AMONG MY DISCIPLES.

"I will wait for the LORD, who is hiding His face from the House of Jacob, I will put my trust in Him." (Isa.8:11-17 NIV)

The New Testament COMPLETES the Bible... the testimony of God.

The Old Testament bore God's promises of the restoration of His Kingdom on earth and the salvation of mankind. The New Testament bears witness to the beginnings and the ongoing fulfillment of them.

"For I tell you that Christ has become a servant of the Jews on behalf of God's Truth, to confirm the promises made to the patriarchs so that the Gentiles may glorify God for His mercy, as it is written: 'Therefore I will praise you among the Gentiles; I will sing hymns to your name.'

"Again, it says, 'Rejoice, O Gentiles, with His people.'" (Rom.15:8-10 NIV)

Jesus' commissioned His disciples to "bind up the testimony" of the Word of God. He revealed Himself to them, that He was the One of whom the Old Testament prophesied:

"...'Everything must be fulfilled that is written about Me in the Law of Moses, the Prophets and the Psalms.'" (Luke 24:44 NIV)

"Then He opened their minds so they could understand the Scriptures." (verse 45)

Jesus commissioned and inspired His disciples to write down and complete the Bible for us in these latter days that approach the final fulfillment of the last of the prophecies.

In His prayer to His Father in heaven regarding His disciples... Jesus also prayed for you and I:

"...'My prayer is not for them alone [not just His disciples]. I pray also for those who will believe in Me through their message..." (John 17:20 NIV).

That's why the New Testament is written: that you and I in these last days, so far removed from that time over two thousand years ago, might believe and grow in Jesus Christ. That we might not believe the conspiracies that men fear and dread... but learn to "fear and dread" Him.

"...since we are receiving a Kingdom that cannot be shaken, let us be thankful, and so worship God acceptibly with reverence and awe, for our 'God is a consuming Fire.'" (Heb.12:29 NIV)

Who could know this, except the disciples had the faith to "bind up" [complete] the testimony?