Basically all Paul does in the first 3 chapters of Ephesians is say:
“Remember who you are, remember who you are, remember who you are.”
Remember how God loves you, remember how he poured his mercy on you, remember how he stepped into your life when you were spiritually dead and gave you CPR of the soul - he revived you to life through His Son.
And through His Son - he has gifted you a brand new identity!
One you didn’t have to create or work to achieve - you received it from Him.