If God is omnipotent, and all wise, why can't he come up with a way to save people who changed their minds after they died?
Even being “omnipotent”, does not mean God can do stuff that cannot be done. For example: God cannot make another Christ, since Christ is part of deity and has always existed.
There are some things that God just cannot do, the one important to us is instinctively create us with Godly type Love, since a knee jerk reaction type of love would be robotic type Love. God will also not force his love on us since that would be unloving on God’s part (there has to be reasonable alternatives to make it a choice [the perceived pleasures of sin]). The easiest way for us to get this Love is through accepting it as a pure charitable gift. The problem being humans (due in part to the needed survival instinct) do not like accepting Charity from a Giver that paid a huge price for the gift.
The easiest way for humans to accept God’s charity (Love) is out of a huge need and that need is the relief from the burden of hurting others in the past (sin). By accepting God’s forgiveness, we accept God’s Love (mercy/grace/charity) and thus we will Love much since Jesus has taught us (we also see this in our own lives) “…he that is forgiven much will Love much…”
Once we accept Godly type Love, we can truly Love and have the privilege and honor of Loving God (the forgiver) and others (God’s children) with all our heart, soul, mind, and energy.
This Godly type Love is defined by Jesus’ words and deeds (you can also use 1 Cor 13 and 1 John 4).
Since God is “Love” and part of the definition of Godly type Love is unselfishness God is totally unselfish? If God is totally unselfish, He will do and allow all He can to help those that are just willing to accept His help fulfill their objective (Love). That “all” includes: Christ to go to the cross, satan to roam the earth, tragedies of all kind, hell, evil, and even sin.
Will we know people do not like to accept charity especially from a giver that paid a huge price? People will try to earn the gift, pay back the gift, be more deserving of the gift than the next person or just say they got the gift without having to accept it. The easiest and only way to accept the gift is through accepting God’s forgiveness (this is after you have sinned) since forgiveness is charity, grace, mercy Love. AND Jesus has taught us “…he that is forgiven much will Love much…”
The problem is God wants us to be like He is (God’s Love is compelling Him to create beings that can Love like He Loves and made these beings for the sake of those that will accept His Love).
If we continue to refuse God’s Love and really do not want to Love unselfishly, where is there for us to go? Heaven is one huge Love feast so we would not be happy there and God wants us to be happy.
Again, the reason we have got to spend time on earth is to hopefully obtain this type of Godly type Love out of a free will choice with likely alternatives. Earth is the very best place to have and make the choice of accepting God’s Love and once you leave earth repeatedly refusing to accept Godly type Love, there is no better place or any other place you would do it out of a free will choice with likely alternatives.