James 4:13 - Matthew Poole's English Annotations on the Holy Bible

Go to now; either this is a note of transition, or of command to inferiors, or rather of admonition to such as are stupid or rash, and tends to the awakening their attention, and stirring them up to the consideration of their duty, danger, &c. Ye that say; either with your mouths, or in your hearts. To-day or to-morrow we will go into such a city; not, let us go, but, we will go, in the indicative mood; noting the peremptoriness of their purposes, and their presuming upon future times and things, which were not in their power. And continue there a year, and buy and sell, and get gain: he doth not condemn merchants travelling into other countries, nor trading there, nor designing gain by their trade, nor forecasting their business; but their promising themselves the continuance of their life, the accomplishing their designs, and the success of their labours, without respect to God's providence and direction, as if their times and their works were in their own hands, not in his.