To magnify anything is to make it appear larger than it is; that could not be so in connection with Christ. But Paul wanted all to shine out in him, so that Christ should bi magnified through him; so shine out, that all should be able to say, 'What a marvelous thing! there is a man so spending his life for Christ, that he does not care to live if he can but magnify Christ by his death! What a marvelous Person that Christ must be!'
If thoughts like this enrich your soul then you have a rich mine of wealth waiting for you in Philippians by G. V. Wigram.