Paul reiterates the fact that believers in Jesus no longer live in darkness because they have been set free from sin and death (Col. 1:13). Unbelievers are blinded to the return of Christ (Jn. 3:19-21; Eph. 4:18). However, for Christians, the return of Christ is a consummation of our salvation. Therefore, we are to remain alert and watchful for Jesus's return!