‏ James 4:15-16

Verse 15. For that ye ought to say. Instead of what you do say, "we will go into such a city," you ought rather to recognise your absolute dependence on God, and feel that life and success are subject to his will. The meaning is not that we ought always to be saying that in so many words, for this might become a mere ostentatious form, offensive by constant unmeaning repetition; but we are, in the proper way, to recognise our dependence on him, and to form all our plans with reference to his will.

If the Lord will, etc. This is proper, because we are wholly dependent on him for life, and as dependent on him for success, he alone can keep us, and he only can make our plans prosperous. In a thousand ways he can thwart our best-laid schemes, for all things are under his control. We need not travel far in life to see how completely all that we have is in the hands of God, or to learn how easily he can frustrate us if he pleases. There is nothing on which the success of our plans depends over which we have absolute control; there is nothing, therefore, on which we can base the assurance of success but his favour.
Verse 16. But now ye rejoice in your boastings. That is, probably, in your boastings of what you can do; your reliance on your own skill and sagacity. You form your plans for the future as if with consummate wisdom, and are confident of success. You do not anticipate a failure; you do not see how plans so skilfully formed can fail. You form them as if you were certain that you would live; as if secure from the numberless casualties which may defeat your schemes.

All such rejoicing is evil. It is founded on a wrong view of yourselves and of what may occur. It shows a spirit forgetful of our dependence on God; forgetful of the uncertainty of life; forgetful of the many ways by which the best-laid plans may be defeated. We should never boast of any wisdom or skill in regard to the future. A day, an hour may defeat our best-concerted plans, and show us that we have not the slightest power to control coming events.
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