in which you used to walk when you conformed to the ways of this world and of the ruler of the power of the air, the spirit who is now at work in the sons of disobedience.
2. In which for some time ye walked. From the effects or fruits, he draws a proof that sin formerly reigned in them; for, until sin displays itself in outward acts, men are not sufficiently aware of its power. When he adds, according to the course of this world, “The Greek word αἰών, and likewise the Latin word AEvum, both signify the ‘lip of man’...
The miserable condition of the Ephesians by nature is here in part described. Observed, 1. Unregenerate souls are dead in trespasses and sins. All those who are in their sins, are dead in sins; yea, in trespasses and sins, which may signify all sorts of sins, habitual and actual, sins of heart and of life. Sin is the death of the soul.
Commenting on Ephesians 2:1-3
Wherein in time past ye walked,.... Sins and transgressions are a road or path, in which all unconverted sinners walk; and this path is a dark, crooked, and broad one, which leads to destruction and death, and yet is their own way, which they choose, approve of, and delight to walk in; and walking in it denotes a continued series of sinning, an obstinate persisting...