Isaiah 26:3-4

The first of these verses is a blessed promise; and the second is the foundation of the enjoyment of it. Some read the last phrase of it (and indeed the margin of our old Bibles preserve the reading so) "the Lord Jehovah is the rock of Ages." Now as the Holy Ghost taught the Church, through Paul the apostle, expressly so, that the rock which followed Israel, was indeed Christ; we do no violence to the words, but on the contrary, express more fully what they themselves express, when we say, "for in the Jah Jehovah is Christ." And what saith the Holy Ghost elsewhere? God was in Christ reconciling the world to himself; 2 Corinthians 5:19; 1 Corinthians 10:4.