"I am grieved by the transitoriness of things." So he preached the Eternal Recurrence of the Same, letting an ersatz Absolute in through the back door. Becoming became enshrined as Being. Thus was an attempt made to fix the flux and assuage the metaphysical need.
Addendum
After penning the above observation, I stumbled upon the following entry in Theodor Haecker's Journal in the Night (tr. Alexander Dru, Pantheon Books, 1950, p. 31, #127):
The most radical denial of need of redemption in this world seems to me to lie in the phrase, 'the eternal recurrence of the same' (Nietzsche). Logically it represents a fantastic confusion thought, since quite evidently everything points in the very opposite direction. Theologically, it is at an infinite distance from God, and it turns everything upside down. At this point discussion is no longer possible.
Haecker is on the right track, The eternity of Recurrence is a paltry substitute for true eternity and in the end no true redemption.