God layeth up, to wit, in his treasures, Romans 2:5. His iniquity, or rather, the punishment of his iniquity, i.e. he will punish him both in his person and in his posterity. He shall know it, i.e. he shall live to see the destruction of his children.
Related Commentaries of Job 21:19
Job 21:19
19 God layeth up his iniquitye for his children: he rewardeth him, and he shall know it.