God's Immutability and Impassibility

Having looked together at the truth that God is a most pure spirit, invisible and without a body or parts in His Being, we now want to turn our attention to the subjects of Divine Immutability and Divine Impassibility. I believe that we should study them together for they are very intimately related theologically speaking. Our God is a God who does not change, and He therefore is a God without passions. He certainly does not have sinful passions; having fits of anger or sadness; neither is He subject to sorrow or pain. But it is also true that He does not at all have any feelings, emotions, or affections which involve change, or which are subject to change. If we will remember that God is a pure being in regard to His immutability (His Unchangeableness), we shall then begin to understand the reasons why He is Impassible. God is pure being with no becoming. He already always was everything that He is now, and He is now everything that He shall be in the future.