Three things are said to be unchangeable: God’s counsel, His word, and His oath (Mal. 3:6; Heb. 6:17-18; Heb. 13:8; 1 Peter 1:25). To these certainty may be attached. In Malachi 3:6 we read, “I am Jehovah, I change not,” and the Lord is “the same yesterday, and to-day, and forever” (Heb. 13:8).