Albert Barnes' Notes on the Whole Bible - Isaiah 8:13
Sanctify ... - Regard Yahweh as holy; that is, worship and honor him with pious fear and reverence. Regard him as the source of safety, and the true defense. Ahaz and his people sought for aid from Assyria against the armies of Syria and Samaria. The direction here is rather to seek aid from God.Let him be your fear - Do not be alarmed at what man can do Isaiah 8:12, but fear and honor God. Be afraid to provoke his wrath by looking to other sources of help when his aid only should be sought. read more
The Pulpit Commentary - Isaiah 8:14
God's twofold relations with men. To some, a "Sanctuary;" to others. a "Rock of offense." For the Christian form of the same truth, comp. 2 Corinthians 2:1 , 2 Corinthians 2:6 . "To the one we are the savor of death unto death, and to the other the savor of life unto life. And who is sufficient for these things?" God is to men as men are to him (see Psalms 18:25 , Psalms 18:26 ), But is this saying anything strange? Surely it is the secret of good motherhood and fatherhood. They who... read more