Isaiah 18:3-6

Here the Lord soundeth an alarm to, all the enemies of his Church; and they are admonished to attend to the sound of the trumpet, that then the Lord goeth forth for the salvation of his people, even for salvation with his Anointed. Every eye shall see, and all faces shall gather blackness, when the Lord turneth back the captivity of his people. And observe how striking is the prophet's expression: for so the Lord said unto me. Christ is the rest, in which Jehovah resteth, and is well pleased: and therefore in him, and his great salvation, Israel's deliverance and security is found. And hence, when the Lord swore in his wrath, that the unbelievers should not enter into his rest, it referred to their rejection of Christ; Hebrews 4:1, to the end.