John Gill Commentary Philippians 3:15

"Let us therefore, as many as are perfect, be thus minded: and if in anything ye are otherwise minded, this also shall God reveal unto you:" — Philippians 3:15 (ASV)

Let us therefore, as many as be perfect
Not absolutely, but comparatively, with respect to other believers, in a lower class of knowledge and experience; and not with respect to degrees, but parts; and regards such who were not children, but of riper age in divine things, unless the words are spoken ironically:

be thus minded ;
as the apostle was, to count what were gain to him, loss for Christ; to reckon all things but loss and dung, for the excellency of the knowledge of Christ; to be willing to suffer the loss of all things, to win him, (Philippians 3:8) ; to desire to be found in him, and in his righteousness, and not a man's own, (Philippians 3:9) ; to know more of him in his person, righteousness, sufferings, death, and resurrection from the dead, (Philippians 3:10) ; and to attain to such a state, and yet to disclaim all perfection, and acknowledge their imperfection, (Philippians 3:11Philippians 3:12) ;

And to forget things behind, and reach to those before, (Philippians 3:13) ; and press towards the mark, Christ, for the prize of eternal glory, (Philippians 3:14) :

and if in anything ye be otherwise minded ;
as to seek for justification by the works of the law, or partly by Christ and partly by the law, and to imagine and expect perfection in this life:

God shall reveal even this unto you ;
such errors will be made manifest sooner or later; the day will declare them, and such wood, hay, and stubble, will be burnt up by the fire, which will reveal every man's work, (1 Corinthians 3:12 1 Corinthians 3:13) .