It's a good question, but like so many things, I'm afraid the answer is beyond our understanding.
No, it’s not beyond your understand. The Bible clearly says, “It has been given unto you to know the mysteries and secrets of the Kingdom.”
What that tells you is that God has given you the ability to know and understand .. beyond your own human understanding. It’s one of the gifts you receive when you receive Jesus as your Savior.
Salvation means: Safety, soundness, preservation, healing, deliverance and provision.
God has supplied everything for us already .. the secret is learning how to operate in it.
Many people cry out for justice when they see wrong, but we must remember that if the perp gets justice, what would you do if you got justice? We are all sinners and fall short of the Glory of God, yet he loves us unconditionally. We all deserve judgment, yet we get Grace and Mercy. God determined to love Adam and Eve from the Creation. He showed his wrath at the Flood and Sodom and Gomorrah. There are sheep and goats, wheat and tares. If you are His, you are His child, adopted into His family. You get the fatted calf, His ring, and a party, even after you have messed up big time. If you are not His, then you have an eternity of Hell in front of you. You would think it would be an easy choice, yet how many love God as He loves us? You must abandon you love of self and serve a loving God that only wants the best for you. For some, that is too great a price.
Exploring the mystery of Gods love will take an eternity. Exploring ourselves is easy. Our righteousness is as a stench in His nostrils and as filthy rags to Him. If we accept Jesus as our Savior and serve Him, then God only sees the righteousness of Jesus when He looks at us. Our debt has been paid in full.
One thing I learned a long time ago about pondering God is we should read the Scriptures and believe them without question. As humans, we tend to try to mix OUR emotions into the story. We don't think like God. We are unable to think like God. The Bible is a love letter from the one who loves us without measure. Take it and don't dress it up with a bunch of emotional claptrap. That is why we have babies being murdered, because we want to be "nice" to women that have committed fornication, and "nice" to homosexuals that seem nice when we meet them. The mother can be saved if she repents, as well as the homosexual, but they don't want to. So we are the ones that bend instead of the sinner. When God said not to eat of the fruit of the tree, He meant don't do it. Some think Adam and Eve "got away with it", because he didn't fry them on the spot. He shed the blood of animals to cover their sin, and they died to Him spiritually that day and they were forever separated from Him. Sarah didn't listen to God and we got the Muslims out of that. Jonah didn't listen to God and he got quite a ride. We can talk ourselves into many things, but Scripture is pretty plain and should be looked at pretty much without emotions clouding our judgment. Satan can "talk" you into almost anything with his lies.
The lesson from Adam and Eve is one lapse of judgment can mess up a bunch of stuff. We are the ones that choose to submit to God's will or rebel. God has it worked out and has had it worked out from the beginning. There is no plan "B". We just need to accept what was said and done, as is.