Therefore - In consequence of the happy change which shall take place in the nation when the oppressor shall be removed Isaiah 29:20-21, and when the poor and the meek shall rejoice Isaiah 29:19, and the ignorant shall be instructed Isaiah 29:18, Jacob shall not be ashamed of his descendants as he was before, nor have cause to blush in regard to his posterity.
Who redeemed Abraham - That is, who brought him out of a land of idolaters, and rescued him from the abominations of idolatry. The word ‘redeem,’ here (פדה pâdâh), properly denotes “to ransom, that is, to redeem a captive, or a prisoner with a price paid Exodus 13:13; Exodus 34:20. But it is also used as meaning to deliver in general, without reference to a price, to free in any manner, to recover 2Sa 4:9; 1 Kings 1:29; Job 5:20; Psalms 71:23. It is used in this general sense here; and means that Yahweh had rescued Abraham from the evils of idolatry, and made him his friend. The connection, also, would seem to imply that there was a reference to the promise which was made to Abraham that he should have a numerous posterity (see Isaiah 29:23).
Jacob shall not now be ashamed - This is a poetical introduction of Jacob as the ancestor of the Jewish people, as if the venerable patriarch were looking upon his children. Their deportment had been such as would suffuse a father’s cheeks with shame; henceforward in the reformation that would occur he would “not” be ashamed of them, but would look on them with approbation.
Neither shall his face wax pale - The face usually becomes pale with fear: but this may also occur from any strong emotion. Disappointment may produce paleness as well as fear; and perhaps the idea may be that the face of Jacob should no more become pallid as “if” he had been disappointed in regard to the hopes which he had cherished of his sons.