_Secondly_, That God is unchangeable in his will: thus it is said of him, _He is of one mind, and who can turn him?_ Job xxiii. 13. This is agreeable to his infinite perfection, and therefore he does not purpose to do a thing at one time, and determine not to do it at another; though it is true, the revelation of his will may be changed, whereby that may be rendered a duty at one time, which was not at another: thus the ordinances of the ceremonial law were prescribed, from Moses’s time to Christ; but after that were abolished, and ceased to be ordinances; so that there may be a change in the things willed, or in external revelation of God’s will, and in our duty founded thereon, when there is, at the same time, no change in his purpose; for he determines all changes in the external dispensation of his providence and grace, without the least shadow of change in his own will: this may farther appear, if we consider, _1st_, That if the will of God were not unchangeable, he could not be the object of trust; for how could we depend on his promises, were it possible for him to change his purpose? Neither would his threatenings be so much regarded, if there were any ground to expect, from the mutability of his nature, that he would not execute them; and by this means, all religion would be banished out of the world. _2dly_, This would render the condition of the best men, in some respects, very uncomfortable; for they might be one day the object of his love, and the next, of his hatred, and those blessings which accompany salvation might be bestowed at one time, and taken away at another, which is directly contrary to scripture, which asserts, that _the gifts and calling of God are without repentance_, Rom. xi. 29. _3dly_, None of those things that occasion a change in the purposes of men, can be applied to God; and therefore there is nothing in him, that in the least degree can lead him to change his will, or determination, with respect to the event of things. For, _1st_, Men change their purpose, from a natural fickleness and inconstancy, as there is mutability in their very nature; but God being unchangeable in his nature, he must be so in his purpose or will. _2dly_, Men change their purposes in promising, and not fulfilling their promise, or, as we say, in being worse than their word, oftentimes from the viciousness and depravity of their nature; but God is infinitely holy, and therefore, in this respect, cannot change. _3dly_, Men change their mind or purposes, for want of power, to bring about what they designed; this has hindered many well concerted projects from taking effect in some, and many threatenings from being executed in others; but God’s will cannot be frustrated for want of power, to do what he designed, inasmuch as he is Almighty.