More New Testament statements affirming why Jesus died:
That those who live (have eternal life/believe) might live for Him
2 Cor. 5:14-15 (ESV)
For the love of Christ controls us, because we have concluded this: that one has died for all, therefore all have died;  and he died for all, that those who live might no longer live for themselves but for him who for their sake died and was raised.
To reconcile us to Himself
2 Cor. 5:18 (ESV)
All this is from God, who through Christ reconciled us to himself and gave us the ministry of reconciliation;
To reconcile the world to Himself
2 Cor. 5:19 (ESV)
that is, in Christ God was reconciling the world to himself, not counting their trespasses against them, and entrusting to us the message of reconciliation.
That we might be the righteousness of God in Christ
2 Cor. 5:21 (ESV)
For our sake he made him to be sin who knew no sin, so that in him we might become the righteousness of God.
That we might be rich
2 Cor. 8:9 (ESV)
For you know the grace of our Lord Jesus Christ, that though he was rich, yet for your sake he became poor, so that you by his poverty might become rich.
To deliver us from this present evil world
Galatians 1:4 (ESV)
who gave himself for our sins to deliver us from the present evil age, according to the will of our God and Father,
To redeem us from the curse of the law
Galatians 3:13 (ESV)
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”-
That we might be adopted as sons
Galatians 4:4-5 (ESV)
But when the fullness of time had come, God sent forth his Son, born of woman, born under the law,  to redeem those who were under the law, so that we might receive adoption as sons.
To forgive our trespasses
Ephes. 1:7 (ESV)
In him we have redemption through his blood, the forgiveness of our trespasses, according to the riches of his grace,
To bring us near to Him
Ephes. 2:11-13 (ESV)
Therefore remember that at one time you Gentiles in the flesh, called “the uncircumcision” by what is called the circumcision, which is made in the flesh by hands-  remember that you were at that time separated from Christ, alienated from the commonwealth of Israel and strangers to the covenants of promise, having no hope and without God in the world.  But now in Christ Jesus you who once were far off have been brought near by the blood of Christ.
To reconcile Jew and Gentile
Ephes. 2:14-16 (ESV)
For he himself is our peace, who has made us both one and has broken down in his flesh the dividing wall of hostility by abolishing the law of commandments and ordinances, that he might create in himself one new man in place of the two, so making peace,  and might reconcile us both to God in one body through the cross, thereby killing the hostility.
To sanctify the church
Ephes. 5:25-27 (ESV)
Husbands, love your wives, as Christ loved the church and gave himself up for her,  that he might sanctify her, having cleansed her by the washing of water with the word,  so that he might present the church to himself in splendor, without spot or wrinkle or any such thing, that she might be holy and without blemish.
To present us holy, blameless and above reproach
Col. 1:21-22 (ESV)
And you, who once were alienated and hostile in mind, doing evil deeds,  he has now reconciled in his body of flesh by his death, in order to present you holy and blameless and above reproach before him,
To cancel the demands of the law against us
Col. 2:13-14 (ESV)
And you, who were dead in your trespasses and the uncircumcision of your flesh, God made alive together with him, having forgiven us all our trespasses,  by canceling the record of debt that stood against us with its legal demands. This he set aside, nailing it to the cross.
To put rulers and authorities to open shame
Col. 2:15 (ESV)
He disarmed the rulers and authorities and put them to open shame, by triumphing over them in him.
To deliver us from the wrath to come
1 Thes. 1:10 (ESV)
and to wait for his Son from heaven, whom he raised from the dead, Jesus who delivers us from the wrath to come.
That we should live together with Christ
1 Thes. 5:9-10 (ESV)
For God has not destined us for wrath, but to obtain salvation through our Lord Jesus Christ,  who died for us so that whether we are awake or asleep we might live with him.
To purify for Himself a people eager to do good works
Titus 2:14 (ESV)
who gave himself for us to redeem us from all lawlessness and to purify for himself a people for his own possession who are zealous for good works.
That God might make the founder of our salvation perfect through suffering
Hebrews 2:10 (ESV)
For it was fitting that he, for whom and by whom all things exist, in bringing many sons to glory, should make the founder of their salvation perfect through suffering.
To purify our consciences to serve the living God
Hebrews 9:13-14 (ESV)
For if the sprinkling of defiled persons with the blood of goats and bulls and with the ashes of a heifer sanctifies for the purification of the flesh,  how much more will the blood of Christ, who through the eternal Spirit offered himself without blemish to God, purify our conscience from dead works to serve the living God.
To leave us an example that we should suffer for Him
1 Peter 2:21 (ESV)
For to this you have been called, because Christ also suffered for you, leaving you an example, so that you might follow in his steps.
To bring us to God
1 Peter 3:18 (ESV)
For Christ also suffered once for sins, the righteous for the unrighteous, that he might bring us to God, being put to death in the flesh but made alive in the spirit,
To be the propitiation for our sins
1 John 2:2 (ESV)
He is the propitiation for our sins, and not for ours only but also for the sins of the whole world.
To make us kings and priests to God forever
Rev. 1:5-6 (ESV)
and from Jesus Christ the faithful witness, the firstborn of the dead, and the ruler of kings on earth.
To him who loves us and has freed us from our sins by his blood
 and made us a kingdom, priests to his God and Father, to him be glory and dominion forever and ever. Amen.
What a God. What a Saviour!