Isaiah 18:4

"For thus hath Jehovah said unto me, I will be still, and I will behold in my dwelling place, like clear heat in sunshine, like a cloud of dew in the heat of harvest."

The first clause positively identifies the speaker of the message "Go ... etc." as Jehovah through Isaiah, not as any kind of message from the ambassadors. The meaning is clear. God does not need any allies, nor does he need anyone to tell him what the dangers are; he is watching everything very carefully from his dwelling place On High. Jamieson paraphrased the meaning thus: "I (God) will not interpose but calmly look on while everything promises success to the enemy; but when it reaches maturity, I will destroy it."[10] The serenity, composure, and calmness of God are here contrasted with the hustle and bustle of the Ethiopians and Assyrians. God never needs to get in a hurry. As predicted by Isaiah in Isaiah 14:25, the enemy will reach the very mountains of Judah. God is here allowing the sins of Assyria to mature; and when the time is ripe judgment will fall.