Isaiah 54:9,10 - Coke's Commentary on the Holy Bible

For this is as the waters of Noah— To confirm the promise above given, a beautiful emblem taken from the deluge is here set forth; for, as God then swore that the waters should no more cover the earth, to destroy the human race, in like manner he assures his church that no persecutions or afflictions should so come upon it in this world, as to overwhelm and utterly destroy it; which also he corroborates by a new emblem in the 10th verse, taken from the mountains and hills. The last clause of the 9th verse may be rendered, So have I sworn that I will not foam out upon thee, or overflow thee in wrath, nor be harsh with thee.