If you are in Christ, you have a new identity. You are a new creation. 2 Corinthians 5:17: “Therefore, if anyone is in Christ, he is a new creation; the old has gone, the new has come!” With that new identity comes power over Satan and sin. God gives us that power. Satan’s goal is to strip that from you. If he can get you to doubt God, if he can get you to believe God power is limited, or if he can get you to walk out on your relationship with God then he steals your identity. Satan just couldn’t take it from you, but he had to make you give it up.
[The problem with “identity” is that it deals with the ego, which is different from your spirit or essence. Thinking that you’re swapping out your ego doesn’t change the real you, no matter what deity you call upon.] – Chico