Job 13:15 Commentary: Rashi & Malbim

Behold, let Him kill me I will not separate from Him, and I will always hope for Him. Therefore, there is no rebellion or transgression in my words, but I will reason to His face about my way and my character traits with which I have conducted myself, to know of what He will find me guilty.

He is either going to die, which would be a relief, or —

If God does indeed govern, perhaps He will hear what Job has to say, be convinced of his innocence and restore him.