In the other things which you have spoken of God's greatness, justice, &c., I do not contend with you, but this one thing I do and must affirm against you. Therefore I said it; I did not utter it rashly, but upon deep consideration. God sends afflictions promiscuously upon good and bad men. Compare Psalms 73:2 Ecclesiastes 9:2 Jeremiah 12:1, &c.
Related Commentaries of Job 9:22
Job 9:22
22 This is one thing, therefore I said it, He destroyeth the perfect and the wicked.