It is possible for us not only to bear with equal minds both extremes, but to get the good out of both. It is a hard lesson and takes much conning, to learn to bear sorrow or suffering or want. They have great lessons to teach us all, and a character that has not been schooled by one of these dwellers in the dark is imperfect as celery is not in season till frost has touched it. But it is not less difficult to learn how to bear prosperity and abundance, though we think it a pleasanter lesson. To carry a full cup without spilling is proverbially difficult, and one sees instances enough of men who were far better men when they were poor than they have ever been since they were rich, to give a terrible significance to the assertion that it is still more difficult to live a Christian life in prosperity than in sorrow. But while both threaten, both may minister to our growth. Sorrow will drive, and joy will draw, us nearer to God. If we are not tempted by abundance to plunge our desires into it, nor tempted by sorrow to think ourselves hopelessly harmed by it, both will knit us more closely to our true and changeless good. The centrifugal and centripetal forces both keep the earth in its orbit.
It is only when we are independent of circumstances that we are able to get the full good of them. When there is a strong hand at the helm, the wind, though it be almost blowing directly against us, helps us forward, but otherwise the ship drifts and washes about in the trough. We all need the exhortation to be their master, for we can do without them and they serve us.
Paul here lets us catch a glimpse of the inmost secret of his power without which all exhortations to independence are but waste words. He is conscious of a living power flowing through him and making him fit for anything, and he is not afraid that any one who studies him will accuse him of exaggeration even when he makes the tremendous claim 'I can do all things in Him that strengtheneth me.' That great word is even more emphatic in the original, not only because, as the Revised Version shows, it literally is _in_ and not _through_, and so suggests again his familiar thought of a vital union with Jesus, but also because he uses a compound word which literally means 'strengthening within,' so then the power communicated is breathed into the man, and in the most literal sense he is 'strong in the Lord and in the power of His might.' This inward impartation of strength is the true and only condition of that self-sufficingness which Paul has just been claiming. Stoicism breaks down because it tries to make men apart from God sufficient for themselves, which no man is. To stand alone without Him is to be weak. Circumstances will always be too strong for me, and sins will be too strong. A Godless life has a weakness at the heart of its loneliness, but Christ and I are always in the majority, and in the face of all foes, be they ever so many and strong, we can confidently say, 'They that be with us are more than they that be with them.' The old experience will prove true in our lives, and though 'they compass us about like bees,' the worst that they can do is only to buzz angrily round our heads, and their end is in the name of the Lord to be destroyed. In ourselves we are weak, but if we are 'rooted, grounded, built' on Jesus, we partake of the security of the rock of ages to which we are united, and cannot be swept away by the storm, so long as it stands unmoved. I have seen a thin hair-stemmed flower growing on the edge of a cataract and resisting the force of its plunge, and of the wind that always lives in its depths, because its roots are in a cleft of the cliff. The secret of strength for all men is to hold fast by the 'strong Son of God,' and they only are sufficient in whatsoever state they are, to whom this loving and quickening voice has spoken the charter 'My grace is sufficient for thee.'