Lk 24:27,44-45, 2 Tim 3:15, Acts 3:18-21,24, Acts 10:43, Acts 28:23, Rom 1:2-3, Rom 3:21-22, Rom 16:26-27, 1 Pt 1:10-11, 1 Jn 1:1-2
The purpose of the writing of the Bible is that people may be saved by believing that Jesus is the Christ, the Son of God. (Jn 20:31)
Jn 20:31 ut these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name.
Jesus explained that the Old Testament was prophecies of Christ and that He was the Christ. (Lk 24:27,44-45)
Lk 24:27 And beginning at Moses and all the prophets, he expounded unto them in all the scriptures the things concerning himself. 44 And he said unto them, These are the words which I spake unto you, while I was yet with you, that all things must be fulfilled, which were written in the law of Moses, and in the prophets, and in the psalms, concerning me. 45 Then opened he their understanding, that they might understand the scriptures,
Paul explained that the Old Testament is the account of Christ and that Christ is Jesus. Paul explained that believing in Jesus as the Christ leads to salvation. (2 Tim 3:15)
2 Tim 3:15 And that from a child thou hast known the holy scriptures, which are able to make thee wise unto salvation through faith which is in Christ Jesus.
Paul testifies that the Old Testament prophets prophesied about Christ, and that Christ is Jesus. (Acts 3:18-21,24, Acts 10:43)
Acts 3:18 But those things, which God before had shewed by the mouth of all his prophets, that Christ should suffer, he hath so fulfilled. 19 Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord. 20 And he shall send Jesus Christ, which before was preached unto you: 21 Whom the heaven must receive until the times of restitution of all things, which God hath spoken by the mouth of all his holy prophets since the world began. 24 Yea, and all the prophets from Samuel and those that follow after, as many as have spoken, have likewise foretold of these days.
Acts 10:43 To him give all the prophets witness, that through his name whosoever believeth in him shall receive remission of sins.
Paul testifies that Jesus is the Christ with the law of Moses and the words of the prophets (Old Testament). (Acts 28:23)
Acts 28:23 And when they had appointed him a day, there came many to him into his lodging; to whom he expounded and testified the kingdom of God, persuading them concerning Jesus, both out of the law of Moses, and out of the prophets, from morning till evening.
Paul testifies that the Christ promised in advance through the prophets in the Old Testament is Jesus. (Rom 1:2-3, Rom 3:21-22)
Rom 1:2 (Which he had promised afore by his prophets in the holy scriptures,) 3 Concerning his Son Jesus Christ our Lord, which was made of the seed of David according to the flesh;
Rom 3:21 But now the righteousness of God without the law is manifested, being witnessed by the law and the prophets; 22 Even the righteousness of God which is by faith of Jesus Christ unto all and upon all them that believe: for there is no difference:
The Christ prophesied through the prophets of the Old Testament is Jesus. God wants all nations to believe that Jesus is the Christ. (Rom 16:26-27)
Rom 16:26 But now is made manifest, and by the scriptures of the prophets, according to the commandment of the everlasting God, made known to all nations for the obedience of faith: 27 To God only wise, be glory through Jesus Christ for ever. Amen.
The Old Testament describes salvation through Christ and prophesied when Christ would suffer and die and be resurrected. (1 Pt 1:10-12)
1 Pt 1:10 Of which salvation the prophets have enquired and searched diligently, who prophesied of the grace that should come unto you: 11 Searching what, or what manner of time the Spirit of Christ which was in them did signify, when it testified beforehand the sufferings of Christ, and the glory that should follow. 12 Unto whom it was revealed, that not unto themselves, but unto us they did minister the things, which are now reported unto you by them that have preached the gospel unto you with the Holy Ghost sent down from heaven; which things the angels desire to look into.
The Christ prophesied in the Old Testament has appeared to us. Jesus is that Christ. (1 Jn 1:1-2)
1 Jn 1:1 That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon, and our hands have handled, of the Word of life; 2 (For the life was manifested, and we have seen it, and bear witness, and shew unto you that eternal life, which was with the Father, and was manifested unto us;)