God created evil (Isaiah 45:7) so that He could reveal good. Once all the good has been revealed, then God abolishes the evil: "The LAST enemy is being abolished: death" (1 Corinthians
15:26). It is self-evident (or should be) that if death is the last enemy abolished, then all former enemies will have already been abolished.
It is God Who has locked up all together in stubbornness (Romans 11:32). The reason for this is so that God can consequently have mercy upon the same all that He locked up (Romans 11:32). God opposes His own opposition in order to reveal Himself. To separate God from the creation of evil, one must also separate Him for the contrastive things: good; resurrection; life; happiness; salvation.
God does not salvage a creation that "went bad." He created things that He could then oppose in order to reveal His heart to creatures He created to be dependent upon contrast for revelation.
