Hello truth lovers, the connection of Jesus Christ as a redeemer of our sins appropriately seems to be of concern to many but appears a little confusing.
1. God's anger with humans through Adam & Eve in the Garden of Eden made God sentence us to painful work and birth.
2. More importantly, humans were also denied the capability to live forever.
3. Then God decided to pardon humanity on the sentence and also revise relationships with humans to select those who lived and would live according to his directives/ways.
4. God's appeasement, and new ways/teachings taken up by Christ who volunteered to come to the world in human form to do it and die.
5. The obedient will know their results on Judgment Day to be rewarded with the Everlasting Life and the disobedient rejected for Satan.
Let's abate the confusion by first appreciating that the whole of Christ business on earth was a prerogative of God and also spiritual-biased. So do not let the human's common expectations overwhelm the assessment. Even as God created us in his image and likeness (Genesis 1:26), His choices are unquestionable. After all human property owners to a large extent have absolute rights to their property, how much more the Creator of the world and such properties!
God has declared human sinful by their original disobedience through Adam/Eve in the garden of Eden. The sin is eating a fruit God prohibited them from eating the fruit, and that if they did or even touched it they would die. Satan succeeded in convincing them to eat it for it would rather open their eyes to know good and evil. So they ate and truly they did not die but their eyes opened to know good an evil (Genesis 3:1-21).
It appears here that God lied to Adam/Eve, but in fact it is that God did not tell too much to Adam, who was then like an infant in our human life, and so expected to keep simple instructions even if too much details aren't given.
The untold part of God's order was that there is another tree (TREE OF LIFE) whose fruit could give everlasting life; and if Adam/Eve became disobedient and would not wait for God to let them eat the fruit according to His own schedule, then they would be denied the fruit of life. That is why in addition to cursing them and the earth, they were sacked from the garden of Eden so that they would not have access to the Tree of Life.
So now humans through Adam/Eve would die after toiling for their upkeep on earth. Then, just as governments pardon prisoners periodically, so did God considered pardoning humans to make them live forever as has been His original plan. But the caveat here is that those that qualify would be the obedient ones thenceforth.
That plan is that Christ as an archangel would take human nature and live among humans to teach that message to the world, for God to eventually select the god-fearing humans thence and before then, as school select students who were attentive in class and learned to pass the exams.
Christ has come and left according to God's plan, the rest is now in our hands to do what we must to please God and receive the "Everlasting Life" (John 3:16) reward during Judgment Day as the student gets their certificate during graduation after exams.
"Whoever has ears, let them hear what the Spirit says to the churches. To the one who is victorious, I will give the right to eat from the tree of life, which is in the paradise of God." (Revelations 2:7)
A day is like a thousand years and a thousand years is like a day to God and this plan had been hatched as far back as Abraham's time to give his lineage the privilege to begat Christ as "the seed" for this mission.