venus,
The OT is full of prophesies of Jesus, and that he would have to suffer that fate. The whole OT is a "shadow of the things to come". Each year, animals were sacrificed for atonement of sin. Jesus was the only sacrifice able to pay for the sins of all.
John 1:29
29 The next day he saw Jesus coming toward him, and said, “Behold, the Lamb of God, who takes away the sin of the world!
If you believe in the resurrection, the only way it's possible is because of Jesus' death and resurrection.
1 Cor 15:12-20
12 But if it is preached that Christ has been raised from the dead, how can some of you say that there is no resurrection of the dead? 13 If there is no resurrection of the dead, then not even Christ has been raised. 14 And if Christ has not been raised, our preaching is useless and so is your faith. 15 More than that, we are then found to be false witnesses about God, for we have testified about God that he raised Christ from the dead. But he did not raise him if in fact the dead are not raised. 16 For if the dead are not raised, then Christ has not been raised either. 17 And if Christ has not been raised, your faith is futile; you are still in your sins. 18 Then those also who have fallen asleep in Christ are lost. 19 If only for this life we have hope in Christ, we are of all people most to be pitied.
20 But Christ has indeed been raised from the dead, the firstfruits of those who have fallen asleep.
