Why did Jesus die on the cross?

[tonychanyt]

Deuteronomy 21:

23 his body shall not remain all night on the tree, but you shall bury him the same day, for a hanged man is cursed by God.

The tree is a type of the cross. Christ fulfilled the above according to Galatians 3:

13 Christ redeemed us from the curse of the law by becoming a curse for us—for it is written, “Cursed is everyone who is hanged on a tree”

Similarly, 1 Peter 2:

24 He himself bore our sins in his body on the tree, that we might die to sin and live to righteousness. By his wounds, you have been healed.

Then there was the piercing prophecies, Isaiah 53:

5 But he was pierced for our transgressions, he was crushed for our iniquities; the punishment that brought us peace was on him, and by his wounds we are healed.

Zechariah 12:

10 I will pour out on the house of David and the inhabitants of Jerusalem a spirit of grace and supplication. They will look on me, the one they have pierced, and they will mourn for him as one mourns for an only child, and grieve bitterly for him as one grieves for a firstborn son.

The piercing was fulfilled on the cross in John 19:

34 But one of the soldiers pierced his side with a spear, and at once there came out blood and water.

Jesus himself prophesied the cross in Luke 9:

23 Then he said to them all: “Whoever wants to be my disciple must deny themselves and take up their cross daily and follow me.

Jesus predicted the lifting up of the cross in John 3:

14 And as Moses lifted up the serpent in the wilderness, so must the Son of Man be lifted up, 15 that whoever believes in him may have eternal life.

Paul affirmed the cross in Philippians 2:

8 And being found in appearance as a man, he humbled himself by becoming obedient to death— even death on a cross!

The instrument of death needed to be crucifixion because it was prophesied.

See also Why did Jesus have to suffer and die?.