One answer is, “Because of death.” Why should there be death if God created everything. Did he make things to die? No. He made them so they could live with him forever.
But something went wrong with the humans he made. Actually, the humans went wrong. They had a difference of opinion with God as to who was the boss. They tried to have a kind of coup, a takeover, a rebellion, you could say. The only trouble is they weren’t capable of running the world like God.
Needless to say God was not too happy about this attempted coup – not that it made any difference to him acting as God. But it did make a difference to the humans acting as humans. Now they had god-sized swelled heads. And they continued to act as though he wasn’t really God.
So God was in the right to condemn them to death – especially since he had warned them beforehand. Death was the only solution for humans who now had it in their make-up to act as pretend gods. There was no other way to rid the race of that delusion and corruption.
But it did spoil God’s plan for a wonderful human race that he could enjoy friendship with. Who can be friends with people who are all the time treating you as though you don’t exist, except when they want you to do something for them? So what to do?
What if God became one of these humans? What if he acted on their behalf, as their representative, and died as they did? Died a death that rescued them from their deaths. That carried their condemnation for them. So they could escape condemnation.
But isn’t the result just one more dead human? Yes, but what if God brought that human being back to life in a body that was no longer in danger of death? Then at least one human being could have a future friendship with God that would never end with death.
And what if God promised all the other humans that this man’s death could be their death and that by believing his promise they too could look forward to a resurrection to life with God forever. What if?
Dale