My best commentary says v.12 refers to “holiness, perfection, and maturity”. Philippians 3: 12 Not that I have already attained, or am already perfected; but I press on, that I may lay hold of that for which Christ Jesus has also laid hold of me. 13 Brethren, I do not count myself to have apprehended; but one thing I do, forgetting those things which are behind and reaching forward to those things which are ahead, 14 I press toward the goal for the prize of the upward call of God in Christ Jesus. 15 Therefore let us, as many as are mature, have this mind; and if in anything you think otherwise, God will reveal even this to you. 16 Nevertheless, to the degree that we have already attained, let us walk by the same rule, let us be of the same mind. 17 Brethren, join in following my example, and note those who so walk, as you have us for a pattern. 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 set their mind on earthly things .