Why do we fight against the greatness of God
There is none like God. Nothing to which He can be compared or substituted. There is God and nothing else. God uses the things of the world (which He made and designed according to the same Word by which we ourselves are saved) to give you a frame of reference (much like Christ using parables to explain the arguments of His gospel). But a summary or symbol, by definition, cannot live up to the fullness of its meaning (as if to say reading the summary of the book was the same as reading the entire volume. Either the summary was insufficient to articulate the entire matter of relevance, or the book had nothing to offer beyond what the summary already made manifest). Do you think that God retaliates out of anger? Or pain? Or fear (Job 22:5)? Is God really hot tempered, prideful, jealous, or hurt? God explains the notion of judgment and law in terms according to our own understanding (i.e. because we sinned out of pride, God acts as though out of pride in rendering recompense), according to the precepts of reaping and sowing, an "eye for an eye," and "as you have judged so shall you be judged."
Through the gospel of Christ, God has put a difference between the letter and appearance of sin and the spirit and intent of the law. The commitment required to faithfully partake and abide in the cross of Jesus Christ is the epitome of righteousness, enacted by example by God Himself. Cleanching your fists in defiance to the nature of flesh accomplishes nothing, enduring as long as you are able will inevitably fail by either the carnal nature or frailty of the nature of flesh. Your sins, the entire concept of sin (transgression of the law) is done away in sincerely following Jesus, who is the Word of God that we are to reverence and honor. Repenting of the manifestations of the flesh is nothing, it is the commitment and devotion of your will and faith that matters to God.
In short, God is not wounded by your sin, but rather you will be, unless you repent. If God can portray the message of your destruction lest you should repent by being "wounded" even unto death to show by example the manner of devotion required in following after Him, then so be it. Making the nature that accepts the cross, the same by which He lived it out in the first place!