Albert Barnes Commentary Isaiah 29:22

"Therefore thus saith Jehovah, who redeemed Abraham, concerning the house of Jacob: Jacob shall not now be ashamed, neither shall his face now wax pale." — Isaiah 29:22 (ASV)

Therefore - In consequence of the happy change that will take place in the nation when the oppressor will be removed (Isaiah 29:20–21), and when the poor and the meek will rejoice (Isaiah 29:19), and the ignorant will be instructed (Isaiah 29:18), Jacob will not be ashamed of his descendants as he was before, nor have cause to blush concerning 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 (2 Samuel 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 made to Abraham that he should have a numerous posterity .

Jacob will 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; henceforth, in the reformation that will occur, he would not be ashamed of them, but would look on them with approbation.

Neither will his face turn 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 will no longer become pallid as if he had been disappointed concerning the hopes that he had cherished for his sons.