We use the phrase “body and soul” to refer to a complete dedication to some activity or cause. Similarly, Paul uses the terms flesh and mind to indicate the life totally consumed by the devil’s will.
We too all previously lived among them in our fleshly desires, carrying out the inclinations of our flesh and thoughts, and by nature we were children under wrath, as the others were also.
Ephesians 2:3 HCSB
“Flesh” (some translations say “body”) is the human decision to give oneself over to the desires and carnal passions. The term “thoughts” or mind, indicates perception, here in the participation in evil, or a “mental orientation” (Richards 605).
Here’s how one version translates it. “All of you used to do whatever felt good and whatever you thought you wanted” (CEB).
Em contrast to the total domination by the devil, Paul celebrates God’s intervention, beginning in verse 4.
Thanks to him and his salvation, the “walk” in sin (verse 2) becomes the “walk” in good works (verse 10).