Job appealed to experience, just like his comforters had done (3:12–17; 5:2).
Will you speak wickedly on God’s behalf: False witnesses were not allowed, even when speaking for God (Exodus 20:16).
Job thought about finding a judge to remove God's burden from him (9:33–34). Eliphaz had encouraged Job to accept God's discipline (5:17).
Job wanted God to call or summon him, so Job could defend himself. Or as an alternative, Job would speak to God. Then God would respond with the charges against Job. Since God did not choose the first option, Job started the second one (13:23). Eventually, God did call Job (38:1–3; 40:1–2). But Job could not reply (40:3–5).