Rom 1:4, Ps 22:15, Isa 53:5-12, Acts 3:14-15, 18, 1 Pt 1:10-11, Ps 16:9-10, Hos 6:2, Jona 1:17, Jona 2:10, Mt 12:39-40, Lk 24:25-27

The Old Testament prophesied that Christ would die for our sins. (1 Pt 1:10-11, Isa 53:5-12, Jonah 1:17)

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.

Isa 53:5 But he was wounded for our transgressions, he was bruised for our iniquities: the chastisement of our peace was upon him; and with his stripes we are healed. 6 All we like sheep have gone astray; we have turned every one to his own way; and the Lord hath laid on him the iniquity of us all. 7 He was oppressed, and he was afflicted, yet he opened not his mouth: he is brought as a lamb to the slaughter, and as a sheep before her shearers is dumb, so he openeth not his mouth. 8 He was taken from prison and from judgment: and who shall declare his generation? for he was cut off out of the land of the living: for the transgression of my people was he stricken. 9 And he made his grave with the wicked, and with the rich in his death; because he had done no violence, neither was any deceit in his mouth. 10 Yet it pleased the Lord to bruise him; he hath put him to grief: when thou shalt make his soul an offering for sin, he shall see his seed, he shall prolong his days, and the pleasure of the Lord shall prosper in his hand. 11 He shall see of the travail of his soul, and shall be satisfied: by his knowledge shall my righteous servant justify many; for he shall bear their iniquities. 12 Therefore will I divide him a portion with the great, and he shall divide the spoil with the strong; because he hath poured out his soul unto death: and he was numbered with the transgressors; and he bare the sin of many, and made intercession for the transgressors.

Jonah 1:17 Now the Lord had prepared a great fish to swallow up Jonah. And Jonah was in the belly of the fish three days and three nights.

The Old Testament prophesied that Christ would rise after His death. (Ps 16:9-10, Hos 6:2, Jonah 2:10, Mt 12:39-40)

Ps 16:9 Therefore my heart is glad, and my glory rejoiceth: my flesh also shall rest in hope. 10 For thou wilt not leave my soul in hell; neither wilt thou suffer thine Holy One to see corruption.

Hos 6:2 After two days will he revive us: in the third day he will raise us up, and we shall live in his sight.

Jonah 2:10 And the Lord spake unto the fish, and it vomited out Jonah upon the dry land.

Mt 12:39 But he answered and said unto them, An evil and adulterous generation seeketh after a sign; and there shall no sign be given to it, but the sign of the prophet Jonas: 40 For as Jonas was three days and three nights in the whale's belly; so shall the Son of man be three days and three nights in the heart of the earth.

According to the Old Testament prophecies of Christ's death and resurrection, Jesus died and rose again the third day. (1 Cor 15:1-4, Rom 1:4, Acts 3:14-15, Lk 24:25-27)

1 Cor 15:1 Moreover, brethren, I declare unto you the gospel which I preached unto you, which also ye have received, and wherein ye stand; 2 By which also ye are saved, if ye keep in memory what I preached unto you, unless ye have believed in vain. 3 For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures; 4 And that he was buried, and that he rose again the third day according to the scriptures:

Rom 1:4 And declared to be the Son of God with power, according to the spirit of holiness, by the resurrection from the dead:

Acts 3:14 But ye denied the Holy One and the Just, and desired a murderer to be granted unto you; 15 And killed the Prince of life, whom God hath raised from the dead; whereof we are witnesses.

Lk 24:25 Then he said unto them, O fools, and slow of heart to believe all that the prophets have spoken: 26 Ought not Christ to have suffered these things, and to enter into his glory? 27 And beginning at Moses and all the prophets, he expounded unto them in all the scriptures the things concerning himself.

That is, Jesus is the Christ prophesied in the Old Testament.