Charles Ellicott Commentary Colossians 3:7

"wherein ye also once walked, when ye lived in these things;" — Colossians 3:7 (ASV)

In which you also walked some time, when you lived (were living) in them.—The former condition of heathenism was that in which “they were living,” with contagion of evil on every side. But St. Paul is not content without noting their own active participation—“you walked in them.” (Compare to Ephesians 4:17-20.)