Ephesians 5 is in some ways a chapter of contrasts. If the previous passage contrasted light with darkness, this passage contrasts wisdom with folly, wise living with foolish living. The contrasts are not unrelated. Those who have been given light are to wisely live like it. Our current text draws our attention to three areas of wise living: (1) We are to walk carefully (v. 15); (2) we are to invest economically (v. 16); and (3) we are to live thoughtfully (v. 17).