Verse 29 adds to the reference to clothing a repeated prohibition as to the other half of our anxieties, and thus rounds off the whole with the same double warning as in verse 22. But it gives a striking metaphor in the new command against 'being of doubtful mind.' The word so rendered means to be lifted on high, and thence to be tossed from height to depth, as a ship in a storm. So it paints the wretchedness of anxiety as ever shuttlecocked about between hopes and fears, sometimes up on the crest of a vain dream of good, sometimes down in the trough of an imaginary evil. We are sure to be thus the sport of our own fancies, unless we have our minds fixed on God in quiet trust, and therefore stable and restful.
Verse 30 gives yet another reason against not only anxiety, but against that eager desire after outward things which is the parent of anxiety. If we 'seek after' them, we shall not be able to avoid being anxious and of doubtful mind. Such seeking, says Christ, is pure heathenism. The nations of the world who know not God make these their chief good, and securing them the aim of their lives. If we do the like, we drop to their level. What is the difference between a heathen and a Christian, if the Christian has the same objects and treasures as the heathen? That is a question which a good many so-called Christians at present would find it hard to answer.
But the crowning reason of all is kept for the last. Much of what precedes might be spoken by a man who had but the coldest belief in Providence. But the great and blessed faith in our Father, God, scatters all anxious care. How should we be anxious if we know that we have a Father in heaven, and that He knows our needs? He recognises our claims on Him. He made the needs, and will send the supply. That is a wide truth, stretching far beyond the mere earthly wants of food and raiment. My wants, so far as God has made me to feel them, are prophecies of God's gifts. He has made them as doors by which He will come in and bless me. How, then, can anxious care fret the heart which feels the Father's presence, and knows that its emptiness is the occasion for the gift of a divine fullness? Trust is the only reasonable temper for a child of such a father. Anxious care is a denial of His love or knowledge or power.
II. Verses 31-34 point out the true direction of effort and affection, and the true way of using outward good so as to secure the higher riches. It is useless to tell men not to set their longings or efforts on worldly things unless you tell them of something better. Life must have some aim, and the mind must turn to something as supremely good. The only way to drive out heathenish seeking after perishable good is to fill the heart with the love and longing for eternal and spiritual good. The ejected demon comes back with a troop at his heels unless his house be filled. To seek 'the kingdom,' to count it our highest good to have our wills and whole being bowed in submission to the loving will of God, to labour after entire conformity to it, to postpone all earthly delights to that, and to count them all but loss if we may win it--this is the true way to conquer worldly anxieties, and is the only course of life which will not at last earn the stern judgment, 'Thou fool.'
That direction of all our desires and energies to the attainment of the kingdom which is the state of being ruled by the will of God, is to be accompanied with joyous, brave confidence. How should they fear whose desires and efforts run parallel with the 'Father's good pleasure'? They are seeking as their chief good what He desires, as His chief delight, to give them. Then they may be sure that, if He gives that, He will not withhold less gifts than may be needed. He will not 'spoil the ship for a ha'p'orth of tar,' nor allow His children, whom He has made heirs of a kingdom, to starve on their road to their crown. If they can trust Him to give them the kingdom, they may surely trust Him for bread and clothes.