How is this compatible with that perfect immutability and simplicity which all true Theists ascribe to the Deity?
By the same act, say they, he sees past, present, and future: His love and hatred, his mercy and justice, are one individual operation: He is entire in every point of space; and complete in every instant of duration.

No succession, no change, no acquisition, no diminution.

What he is implies not in it any shadow of distinction or diversity.

And what he is this moment he ever has been, and ever will be, without any new judgement, sentiment, or operation.

He stands fixed in one simple, perfect state: nor can you ever say, with any propriety, that this act of his is different from that other; or that this judgement or idea has been lately formed, and will give place, by succession, to any different judgement or idea.
I can readily allow, said CLEANTHES, that those who maintain the perfect simplicity of the Supreme Being, to the extent in which you have explained it, are complete Mystics, and chargeable with all the consequences which I have drawn from their opinion.