Isaiah 8:13 - Coke's Commentary on the Holy Bible

Sanctify the Lord of Hosts himself— The Lord of Hosts, him shall ye sanctify, &c. The duty opposite to the vice of the Jewish people is here set forth, Sanctify the Lord; that is to say, so worship and reverence him, as to attribute to him all that glory which properly belongs to him. See Numbers 20:12. Deuteronomy 32:51 and ch. Isaiah 29:23 of this book. Perhaps the word sanctify in this place contains a more sublime sense; leading us to understand, that he gives the greatest honour to God, who acknowledges him not only able to protect his people against all worldly power, but also to perform, and about to perform to the whole believing world, that spiritual deliverance in his Son, figured out by every other deliverance, the basis and foundation of every other, and the promise of which was wrapped up in the name Immanuel. He who believes God in this great promise, will never distrust him in lesser ones: and to this what follows has an immediate respect.