Even if that means God must do evil, himself?
God does as God wills, whether it appears good or evil to man is irrelevant.
"XCVIII. Say: O leaders of religion! Weigh not the Book of God with such standards and sciences as are current amongst you, for the Book itself is the unerring balance established amongst men. In this most perfect balance whatsoever the peoples and kindreds of the earth possess must be weighed, while the measure of its weight should be tested according to its own standard, did ye but know it."
(Baha'u'llah, Gleanings from the Writings of Baha'u'llah, p. 198)
"Lauded be Thy name, O my God! Aid Thou by Thy strengthening grace Thy servants and Thy handmaidens to recount Thy virtues and to be steadfast in their love towards Thee. How many the leaves which the tempests of trials have caused to fall, and how many, too, are those which, clinging tenaciously to the tree of Thy Cause, have remained unshaken by the tests that have assailed them, O Thou Who art our Lord, the Most Merciful!"
(Baha'u'llah, Prayers and Meditations by Baha'u'llah, p. 77)
"Reflect upon his holiness Job: What trials, calamities and perplexities did he not endure! But these tests were like unto the fire and his holiness Job was like unto pure gold. Assuredly gold is purified by being submitted to the fire and if it contain any alloy or imperfection, it will disappear. That is the reason why violent tests become the cause of the everlasting glory of the righteous and are conducive to the destruction and disappearance of the unrighteous."
(Abdu'l-Baha, Tablets of Abdu'l-Baha v3, p. 654)
Regards,
Scott