Evil cannot, does not, must not 'make sense'

Because of the plethora of weddings I was involved with last week, I didn't manage to get across to the Portstewart - Keswick Convention where Dr Chris Wright was giving the morning Bible readings.  I have however, been richly exercised and stimulated over these past few days through reading the opening sections of his book, The God I Don't Understand, in which he addresses some of the Biblical issues that at times cause believers to question or query the character and purposes of God - either through his activity or more, his apparent inactivity - and which are often grist to the antagonist's mill. I don't agree with everything, but he is very helpful in a number of areas.  Take for instance, the 'mystery of evil'...
That God has chosen to reveal so much in His Word about Himself, creation, humanity, sin, Christ, redemption, heaven and hell, etc., indicates that where God has not given clear information about such as ultimate questions regarding the origin of evil, Satan, the suffering of the "innocents" etc, such silence is because he has deliberately determined to withhold answers to such questions.  The Bible gives the occasional hint, but there are no definitive answers.  And this, says Wright, is a wholly positive and necessary thing.
Like Alister McGrath, Chris Wright draws attention to our investigative rationality as part of what it means to be made in the image of God.  We have a fundamental drive to explore, to question, to understand and explain life, the universe, everything.  Even evil.  But our explanations for the presence and impact of evil do not and will not work because evil, simply, cannot be rationalised. He writes in summary conclusion: 

Aftermath of the Aurora cinema shootings

"God with his infinite perspective, and for reasons known only to himself, knows that we finite human beings cannot, indeed must not, "make sense" of evil.  For the final truth is that evil does not make sense. "Sense" is part of our rationality that is in itself part of God's good creation and God's image in us.  So evil can have no sense, since sense itself is a good thing.

"Evil has no proper place in creation.  It has no validity, no truth, no integrity.  It does not intrinsically belong to the creation as God originally made it nor will it belong to creation as God will ultimately redeem it.  It cannot and must not be integrated into the universe as a rational, legitimated, justified part of reality.  Evil is not there to be understood, but to be resisted and ultimately expelled.  Evil was and remains an intruder, an alien presence that has made itself almost (but not finally) 'at home'.  Evil is beyond our understanding because it is not part of the ultimate reality that God in his perfect wisdom and utter truthfulness intends for us to understand.  So God has withheld its secrets from his own revelation and our research" (p.42).

In subsequent chapters Wright develops his approach, and to be fair to his intentions, I need to point out that while he argues that the Bible compels us to 'accept' the mystery of evil and suffering as something that is beyond our understanding, this does not imply that we should just resignedly acquiesce to its presence;  rather, the Biblical call is to protest and lament at the offence of evil which contradicts the goodness and purposes of God; and by faith, look ahead with joy-filled hope at evil's present defeat and final and unequivocal destruction in the new creation (p.56ff) - all in consequence of Jesus' triumphant victory at the Cross and through his resurrection (Col. 1: 20).