I love to hail my Daddy as the Unchangeable Changer for many reasons. He is unchangeable because He is not subject to variation or alteration (James 1:17). The Almighty God is an infinitely perfect and self-existent Being. He is exalted far above the possibility of change because He is independent and not limited by all the factors that cause change. As a self-existing being, God cannot be changed by forces outside Himself. He is also not subject to change from within His person because He is perfect in nature. He cannot be subject to any form of change at all because He is eternal and independent of time (1st Timothy 6:16). The unchanging nature of God is established throughout the Bible (Numbers 23:19, 1st Samuel 15:29, Isaiah 46:9-11, Ezekiel 24:14). Here is His declaration about Himself in Malachi 3:6:
“For I am the LORD, I change not; therefore ye sons of Jacob are not consumed.”
The moral consistency of our God guarantees His commitment to unchanging principles. Just as His nature is unchangeable, His character is also unchanging. The Psalmist testifies to this truth in Psalm 100:5:
“For the LORD is good; his mercy is everlasting; and his truth endureth to all generations.”
In addition to God’s character being constant, His plans and purposes cannot also be altered by any outside forces. Proverbs 19:21 says
“There are many devices in a man’s heart; nevertheless the counsel of the LORD, that shall stand.”
As our God lives, His good counsel over your life shall come to pass in Jesus’ Name.

God’s unchanging nature is connected to the fact that He is Omniscient. A person usually changes his or her mind because of new information that was previously unavailable, or because of new developments that require a different approach. Since God is Omniscient, He cannot learn something new that He did not already know. The unchanging nature of God, coupled with His ability to turn any situation around for good is a great advantage to His children. Because our God is faithful, you can be sure that every promise in His word to you will come to pass. Remember also that the fact that He has not imposed His promised judgment on workers of iniquity is indicative of His enduring mercy and unchanging grace. Please tap into this grace while it is yet available. 
Written by Pastor E.A. Adeboye.