Bildad has warned Job of the fate of the impious. Now he returns to the other half of his doctrine also, and sums up his whole position in Job 8:20. God can neither reject the blameless, nor uphold the wicked. If Job is really blameless, i.e. if he humbly accepts the Divine chastisement, God will yet reward him (Job 8:21 f.).
Related Commentaries of Job 8:20
Job 8:20-22
20 Behold, God will not cast away a perfect man, neither will he helpd the evil doers:
21 Till he fill thy mouth with laughing, and thy lips with rejoicing.e
22 They that hate thee shall be clothed with shame; and the dwelling place of the wicked shall come to nought.