Albert Barnes Commentary Job 30:20

"I cry unto thee, and thou dost not answer me: I stand up, and thou gazest at me." — Job 30:20 (ASV)

I cry to you, and you do not hear me - This was a complaint which Job often made, that he could not get the ear of God; that his prayer was not regarded, and that he could not get his cause before Him. Compare Job 13:3, Job 13:19 and following, and Job 27:9.

I stand up - Standing was a common posture of prayer among the ancients; see Hebrews 11:21; 1 Kings 8:14, 8:55; Nehemiah 9:2. The meaning is, that when Job stood up to pray, God did not regard his prayer.