John Wesley on Joshua 14:2

By lot - This course God ordained, partly to prevent discontents, enmities and quarrels among the tribes, and partly to demonstrate the truth and wisdom of his providence, by which alone those parts fell to each of them, which Jacob long since, and Moses lately, foretold; so that as a learned man saith, he must be more stupid than stupidity, that doth not acknowledge a Divine hand in this matter. The lot did only determine the several parts to the several tribes, but did not precisely fix all the bounds of it; these might be either enlarged or diminished according to the greater or smaller number of the tribes.