Cast abroad the rage of thy wrath - That is, as God does. Show that the same effects can be produced by “your” indignation which there is in his. God appeals here to the effect of his displeasure in prostrating his foes as one of the evidences of his majesty and glory, and asks Job, if he would compare himself with him, to imitate him in this, and produce similar effects.
And behold every one that is proud, and abase him - That is, “look” upon such an one and bring him low, or humble him by a look. It is implied here that God could do this, and he appeals to it as a proof of his power.