Charles Spurgeon Commentary Isaiah 54:9

"For this is [as] the waters of Noah unto me; for as I have sworn that the waters of Noah shall no more go over the earth, so have I sworn that I will not be wroth with thee, nor rebuke thee." — Isaiah 54:9 (ASV)

For this is as the waters of Noah unto me; for as I have sworn that the waters of Noah should no more go over the earth: so have I sworn that I would not be wroth with thee, nor rebuke thee.

See how our faithful and unchanging God lays the foundation for our hopes—"In oaths, and promises, and blood."