So many doctrines have been piled on to the simple Gospel that it’s sometimes hard to see the forest behind the trees. Let’s wipe the slate clean and start from scratch. Here’s the big picture, the way I see it.
Adam and Eve were in the garden, perfect, free of any dysfunction in their fleshly bodies, living in a perfect little world free of lack. “Garden” or “park” in Greek is παράδεισος – paradeisos, or paradise. Their benevolent creator Daddy gave them free reign and roam throughout everything. Being fruitful and multiplying was only a part of it. Their job was to rule the earth, starting from the garden on out, and spread that benevolent reign over all of the earth.
Daddy God warned the first couple that they can live a pure simple life or trust, or they can be the judges of good and evil themselves. The latter came with a huge warning. The warning was this: “the day you eat of the tree, in dying shall you die”. That’s in literal Hebrew. (The exact mechanics that involved eating some fruit has little significance for us now, as we look back in time). In other words, something like a virus (i.e., sin) will grab hold of you, which will cause you to run down, get sick, and eventually die. In dying you shall die – that’s both the progressive and the final aspect of death. That’s the law of sin and death for you.
As the result of the fall, the same thing happened in the world at large. Sin (dysfunction) entered into the world, and so lack and scarcity entered into it, and things have been winding down and wearing out ever since (death). The concept of entropy in physics is a prime testament to that.
All of that was not due to God’s cursing his creation. Those were simply the consequences of wrong actions, and they came with God’s warning (Gen. 2:17). Also, post-transgression, God immediately stated the effects of what had just happened (Gen. 3:17).