If we want an honest, unbiased assessment of who we are, then God is the only one who can give us what we need. Which is why Psalm 139 ends with this request, ‘Search me, God, and know my heart; test me and know my anxious thoughts. See if there is any offensive way in me, and lead me in the way everlasting.’ (Psalm 139: 23-24)
As we come to Ephesians chapter 2, we’re asking God to give us an honest assessment of who we are. As we do it’s important to note the tense. Who we are, not who we once were! While Paul will point to our sinful past and how we were dead in our transgressions because of how we used to live. Again, past tense, were dead, used to live.