2:13 God who works in you. The use of human effort (v. 12), far from violating God’s will, is just what He commands for achieving His saving purpose (Eph. 2:8–10). Having invoked the example of Christ, Paul reassures the Philippians that they do not will and work on their own, but their wills and their actions are the very arenas where God’s own power is working (4:13; 1 Thess. 2:13).