At Ancient Hebrew Poetry:

Theodic discourse, that is, pious justification of evil and suffering, provokes God’s anger in the book of Job. In the book of Job, it is the sufferer, the one who screams bloody murder from a location within God’s jaws; it is the screaming sufferer who unlocks those jaws. Accusatory Job encounters divine favor, and is commended by God for having spoken rightly and sincerely about God.

It’s not what you say. It’s who you say it to, in what context. God, it appears, can take whatever we throw at him.

It’s right there in Job 42:7-8.

Text, translation, and commentary here…