Charles Ellicott Commentary Isaiah 22:23

"And I will fasten him as a nail in a sure place; and he shall be for a throne of glory to his father`s house." — Isaiah 22:23 (ASV)

I will fasten him as a nail in a sure place ... —The word for nail is used both for the peg that fastens a tent to the ground, as in the stakes of Isaiah 33:20; Isaiah 54:2; Judges 4:21, or, as in Ezekiel 15:3, for a nail driven into the wall. Here the context shows that the latter meaning is preferable. It was, as the sequel shows, a symbol of the support upon which others can depend. (Compare to the nail in his holy place of Ezra 9:8.)

He shall be for a glorious throne ... —Another symbol of sovereignty follows. The form, throne of glory, is found in its highest application in 1 Samuel 2:8, and Jeremiah 14:21; Jeremiah 17:12. Such a throne, kingly in its state, is to be the pride of the previously obscure house of Eliakim.