I AM WHO I AM

“God said to Moses, “I AM WHO I AM.” And he said, “Say this to the people of Israel: ‘I AM has sent me to you.’” Exodus 3:14 (ESV)

“For I the LORD do not change; therefore you, O children of Jacob, are not consumed.” Malachi 3:6 (ESV)

“Every good gift and every perfect gift is from above, coming down from the Father of lights, with whom there is no variation or shadow due to change.” James 1:17 (ESV)

God is who he is

“God is immutable in His essence. His nature and being are infinite, and so, subject to no mutations. There never was a time when He was not; there never will come a time when He shall cease to be. God has neither evolved, grown, nor improved. All that He is today, He has ever been, and ever will be. “I am the Lord, I change not” (Mal. 3:6), is His own unqualified affirmation. He cannot change for the better, for He is already perfect; being perfect, He cannot change for the worse. Altogether unaffected by anything outside Himself, improvement or deterioration is impossible. He is perpetually the same. He only can say, “I AM THAT I AM” (Ex. 3:14). He is altogether uninfluenced by the flight of time. There is no wrinkle upon the brow of eternity. Therefore His power can never diminish, nor His glory ever fade.” https://www.monergism.com/immutability-god-0 - A. W. Pink

The Bible is your unchanging truth

“Because he does not change, we can rely on the unchanging truth of Scripture. What he pronounces as sin will always be sin. What he pronounces as good will always be good. All that he has promised to do must come to pass. The gospel itself is bound up in the idea of God’s immutability… Nothing we could do can remove from us the seal of his promised redemption. Nothing can separate us from the unfailing, unchanging love of this great God, the Rock of our salvation upon which the house of our faith is built.” No One Like Him by Jen Wilkin.