The purity of God is generally something that is assumed, and not generally something that is discussed at great length. But I though that it was only appropriate to discuss this topic considering that this blog is all about purity and striving to understand it. The dictionary definition of purity is: "Freedom from adulteration or contamination." To adulterate something is to cause it to become poorer in quality based on what is added to it. Because God is God, far above and beyond anything we could ever fully understand, anything that caused him to change, especially anything that came from us, would take away from his purity. To contaminate, means to "make something impure by exposure to or addition of a poisonous or polluting substance."
While the term purity is not one that is used very often of God in the Bible, we know that God is pure based on other things that are said of Him in his word. Numerous places in the Bible speak of God as being both "eternal" and "unchangeable".
Hebrews 6:17-18 says "In the same way God, desiring even more to show to the heirs of the promise the unchangeableness of his purpose, interposed an oath, so that by two unchangeable things in which it is impossible for God to lie, we who have taken refuge would have strong encouragement to take hold of the hope set before us."
And Deuteronomy 33:2a says "The eternal God is a dwelling place, And underneath are the everlasting arms..."
These are just two of the passages that deal with these two parts of the nature of God that show his purity. No one has ever added to God. No one has ever contributed something to him that he was lacking. God has always been who he is, and he will always be who he is. He is not corrupted or changed and he cannot be corrupted or changed because that is who he is. This is a part of what the name of "I Am" means, which is the name he gave himself when he first began his plan to rescue the people of Israel. God is. He is God, he is divine, he is holy, he is complete.
Note: All definitions on this blog are from The New Oxford American Dictionary, unless otherwise noted.