Isaiah 60:18

That this and what follows must necessarily be understood of the church triumphant (though there only it will be complete) I see no necessity, neither will obtrude my judgment, but leave it to the judicious, as being more proper in a comment: none to offer violence to this quiet state thou shalt attain to, either within thee, to oppress by injustice, rapine, or fraud, or without thee by hostile invasions; and this the prophet mentions as the effect of good officers in the former verse. Wasting nor destruction within thy borders; no havoc made among thy people. Thou shalt call thy walls Salvation; they shall be safe, and able to defend thee; thou shalt bc as safe as salvation itself can make thee. When a thing is said in Scripture to be called so, it often signifies as much as to be so, Isaiah 26:1, Isaiah 47:1 65:7, and it intimates as much as that God will be salvation to his church: when they shall be without gates and walls, he will be their safety, and the matter of their praise; see Isaiah 26:1; and God's care of his church is the matter of that exhortation to praise him, Psa 147. And thy gates Praise; a double metonymy, viz. of the effect, as salvation will cause praise; and of the adjunct, as it is worthy of praise; so that within or upon thy gates and walls thou shalt sing praises.