The context for this verse is the RESURRECTION of our bodies, and that’s important to keep in mind. If we don’t understand that it’s about the resurrection, there is a risk we might misunderstand Paul and believe that he is talking about a moral perfection and that he has failed to live morally upright here on earth. Paul doesn’t talk about moral perfection but about a bodily perfection, because as long as we remain in our earthly bodies we must accept that we are not physically perfect but actually rather weak and fragile. Our goal is to one day enter the kingdom of God, and get new glorified bodies. Jesus asked us to be perfect (which you can read more about here), and naturally Paul wouldn’t argue against his Master.
Phil. 3:2 For we are the circumcision, which worship God in the spirit, and rejoice in Christ Jesus, and have no confidence in the flesh.
Those who are the circumcision (of the heart) are those who worship God in spirit, and that is in contrast to those who obey their flesh. Only those who worship God in spirit will one day inherit the kingdom of God, so this is a condition for salvation.
Phil. 3:6 Concerning zeal, persecuting the church; touching the righteousness which is in the law, BLAMELESS (“found blameless”, NASB). 7 But what things were gain to me, those I counted loss for Christ.
The problem with the pharisees was that they were not clean on the inside but only on the outside, and Paul counted himself as a pharisee who was eager to obey God and his laws (as he understood them). Even if Paul was a learned man with a good reputation, he feels that such worldly glory isn’t worth anything in comparison to what he has found in Jesus Christ. We are told to not love the world or anything in it, but we are supposed to live our lives for Christ and his kingdom. Naturally Paul doesn’t suggest that it’s now less important to be faithful to God compared with before.
Phil. 3:8 Yea doubtless, and I count all things but loss for the excellency of the knowledge of Christ Jesus my Lord: for whom I have suffered the loss of all things, and do count them but dung, that I may win Christ,9 And be found in him, not having mine own righteousness, which is of the law, but that which is through the faith of Christ, the righteousness which is of God by faith:
Paul’s aim is to win Christ and be found in him, and that means that he has to move forward and leave the Jewish ceremonial laws behind him and put his faith in Jesus Christ. The eternal life that Jesus offers is by faith (evidenced by obedience from the heart) and one is not saved only because he is born a jew and circumcised. Paul says again, in Phil. 3:2, that those are circumcised who worship God in spirit, and who rejoice in him. If we have sinned (and we have), we are not able to be cleansed and righteous in ourselves but we rely on righteous blood shed for our sake. We can be righteous if we confess our sins and repent, because then we become cleansed from our sins in the precious blood of Jesus. Paul makes a difference between works of the law (the entire Torah with its 613 laws) and obedience to God.
Phil. 3:10 That I may know him, and the power of his resurrection, and the fellowship of his sufferings, being made conformable unto his death;11 If by any means I might attain unto the resurrection of the dead.12 Not as though I had already attained, either were already perfect: but I follow after, if that I may apprehend that for which also I am apprehended of Christ Jesus.13 Brethren, I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before,14 I press toward the mark for the prize of the high calling of God in Christ Jesus.
Above is the direct context to v. 12. It’s about the resurrection of the dead, which is the goal for Paul, and when he writes to the Philippians he hasn’t reached this goal yet. Paul presses forward towards the prize, but he still calls himself PERFECT, and shows that he isn’t the only one being perfect.
Phil. 3:15 Let us therefore, AS MANY AS BE PERFECT, be thus minded: and if in any thing ye be otherwise minded, God shall reveal even this unto you.16 Nevertheless, whereto we have already attained, let us walk by the same rule, let us mind the same thing.
Paul isn’t physically perfect, but he is morally and spiritually perfect. He asks us to walk by the same rule, based on perfection.
Phil. 3:17 Brethren, join in following my example, and observe those who walk according to the pattern you have in us.(NASB)18 (For many walk, of whom I have told you often, and now tell you even weeping, that they are the enemies of the cross of Christ:19 Whose end is destruction, whose God is their belly, and whose glory is in their shame, who mind earthly things.)
Paul – who calls himself holy, righteous and blameless – asks others to follow his example. If he would be mixing good deeds with bad deeds (sin), he wouldn’t be a very good example for us, but he would be a big hypocrite and someone to stay away from. Paul weeps about those who are not walking with him on the narrow path to God, and he calls them enemies of Christ. Their end is destruction! That’s because they have their mind on earthly things instead of focusing on God.
Phil. 3:20 For our conversation is in heaven; from whence also we look for the Saviour, the Lord Jesus Christ:21 Who shall change our vile body, that it may be fashioned like unto his glorious body, according to the working whereby he is able even to subdue all things unto himself.
Paul continues to talk about the resurrection in heaven, and the new glorified bodies. He doesn’t say that he isn’t able to fight his flesh successfully unless he first gets a new glorified body. We don’t have to wait until we die before we can be faithful to God, but we can live holy lives here and now. Not even Jesus was “perfected” until the third day in his resurrection, so it’s about the physical body.
Luke. 13:32 And he said unto them, Go ye, and tell that fox, Behold, I cast out devils, and I do cures to day and to morrow, and the third day I shall be perfected.
Paul about himself:
1 Thess 2:10 Ye are witnesses, and God also, how holily and justly and unblameably we behaved ourselves among you that believe:—12 That ye would walk worthy of God, who hath called you unto his kingdom and glory.
Acts 23:1 And Paul, earnestly beholding the council, said, Men and brethren, I have lived in all good conscience before God until this day.
1 Cor. 4:4 My conscience is clear, but that does not make me innocent. It is the Lord who judges me. (NIV)
Rom. 6:5 For if we have been planted together in the likeness of his death, we shall be also in the likeness of his resurrection:6 Knowing this, that our old man is crucified with him, that the body of sin might be destroyed, that henceforth we should not serve sin.–12 Let not sin therefore reign in your mortal body, that ye should obey it in the lusts thereof.13 Neither yield ye your members as instruments of unrighteousness unto sin: but yield yourselves unto God, as those that are alive from the dead, and your members as instruments of righteousness unto God.—16 Know ye not, that to whom ye yield yourselves servants to obey, his servants ye are to whom ye obey; whether of sin unto death, or of obedience unto righteousness?17 But God be thanked, that ye were the servants of sin, but ye have obeyed from the heart that form of doctrine which was delivered you.
1 Cor. 9:24 Know ye not that they which run in a race run all, but one receiveth the prize? So run, that ye may obtain.25 And every man that striveth for the mastery is temperate in all things. Now they do it to obtain a corruptible crown; but we an incorruptible.26 I therefore so run, not as uncertainly; so fight I, not as one that beateth the air:27 But I keep under my body, and bring it into subjection: lest that by any means, when I have preached to others, I myself should be a castaway.