Note 6 at Phil. 1:6: Paul had confidence in the Lord that what he had started in the Philippians He would also continue and complete. That is not to say that the Philippians' success was automatic; we have to co-operate with what God is wanting to do in our lives (see note 10 at Acts 27:22, p. 729). Our faithfulness may always be suspect, but God's faithfulness is never in question. It is always God's will to continue and complete the good work that He begins in us.

Note 7 at Phil. 1:6: "The day of Jesus Christ" that Paul is speaking of here is the second coming of Christ (see note 4 at Acts 1:7, p. 572 and ref. i at this verse). Paul is confident that the salvation given to them through faith in Christ would be secure until Christ returned and their physical bodies were changed into His image (Phil. 3:21).