God has no reverse. God's kingdom doesn't beep. The back-up lights don't exist. We may wish for a time machine, but God deems it unnecessary.
We think a time machine would be fantastic. We would love to go back and fix, erase, redo, or delete some event, word, thought, or deed. God doesn't see the need. He makes no mistakes, forgives us of ours, and heals those that have harmed us from others.
There are no rewrite's in God's script of human history. God allows us (the actors) to improv. He manages somehow to allow us freedom of choice in what we say, think, and do while His involvement in our lives remains true to the script. God doesn't write in chalk. He writes in permanent marker. The only eraser God owns is the one He uses to forgive our sins.
The prophet Balaam understood this when he said, "God is not a man, that He should lie, nor a son of man, that He should repent" (Numbers 23:19). God doesn't back up because He always does it right the first time.
God not only does it right - He does it great! When God chooses to bless, He blesses so good that His blessings have no reverse either. Why anyone would want to reverse a blessing is beyond me, but just so there's no mistake, Balaam added, "He has blessed, and I cannot reverse it" (verse 20).
God deserves an awful lot more credit and praise than we give Him. God is good. All the time. He makes no mistakes. His gifts never have to be returned. You don't need to keep the receipt. Just enjoy and celebrate His blessings.
The "R" on God's steering column stands for Rejoice!