Ephesians 2:3

also we--that is, we also. Paul here joins himself in the same category with them, passing from the second person (Eph 2:1-2) to the first person here. all--Jews and Gentiles. our conversation--"our way of life" (Co2 1:12; Pe1 1:18). This expression implies an outwardly more decorous course, than the open "walk" in gross sins on the part of the majority of Ephesians in times past, the Gentile portion of whom may be specially referred to in Eph 2:2. Paul and his Jewish countrymen, though outwardly more seemly than the Gentiles (Act 26:4-5, Act 26:18), had been essentially like them in living to the unrenewed flesh, without the Spirit of God. fulfilling--Greek, doing. mind--Greek, "our thoughts." Mental suggestions and purposes (independent of God), as distinguished from the blind impulses of "the flesh." and were by nature--He intentionally breaks off the construction, substituting "and we were" for "and being," to mark emphatically his and their past state by nature, as contrasted with their present state by grace. Not merely is it, we had our way of life fulfilling our fleshly desires, and so being children of wrath; but we were by nature originally "children of wrath," and so consequently had our way of life fulfilling our fleshly desires.

— Jamieson-Fausset-Brown Commentary (public domain)