'Unchanging' in the Bible

Hear, ye mountains, Jehovah's controversy, and ye, unchanging foundations of the earth; for Jehovah hath a controversy with his people, and he will plead with Israel.

Who is a God like You, who pardons iniquityAnd passes over the rebellious act of the remnant of His possession?He does not retain His anger forever,Because He delights in unchanging love.

You will give truth to JacobAnd unchanging love to Abraham,Which You swore to our forefathersFrom the days of old.