The Immutability of God
God’s immutability is his perfect unchangeability in his essence, character, purpose, and promises.
The quality of not being susceptible to change. In theology it signifies the attribute, or perfection, of God whereby he remains the same in his divine nature and purpose.
1. He is eternally the same (Ps. 102:25–27).
2. He is the first and the last (Isa. 41:4; 43:10; 44:6; 48:12).
3. He is what he is (Ex. 3:14).
4. He is incorruptible, alone having immortality, always remaining the same (Rom. 1:23; 1 Tim. 1:17; 6:15–16; Heb. 1:11–12).
5. His thought, purpose, will, and decrees are unchangeable:
a. He executes his threats and promises (Num. 23:19; 1 Sam. 15:29).
b. He does not repent of his gifts and calling (Rom. 11:29).
c. He does not cast off people with whom he has made a unilateral covenant (Rom. 11:1).
d. He glorifies those whom he foreknows (Rom. 8:29–30).
e. He perfects what he starts (Ps. 138:8; Phil. 1:6).
f. His faithfulness never lessens (Lam. 3:22–23).
6. He does not change (Mal. 3:6; James 1:17).