Ok. I just found the answer Isaiah 43:2626 Put me in remembrance: let us plead together: declare thou, that thou mayest be justified.
What does God mean when He says, “Put Me in remembrance”? In other words, He’s saying, “Remind Me.” Now, if God tells me to remind Him of something, I’m going to remind Him!
Well, God said for us to put Him in remembrance. And He tells us what to remind Him of: “I am He that blots out your transgressions, and I will not remember your iniquities [sins].”
God doesn’t forget His Word or His promises, so why does He tell you to put Him in remembrance? When you remind Him, you also remind yourself.
It’s important to remind yourself of God’s forgiveness, because when you go to God in prayer, the devil will try to bring all of your past failures and sins up before you. If you entertain the thoughts the devil brings, you will begin to think, There’s no use for me to go to God; He’s not going to hear me. I’ve messed up too badly.