Read Lamentations 3:22 

The LORD's mercies never cease.

The LORD's compassions never fail.

The LORD's faithfulness never diminishes. 

That defines God's immutability, which is a four-bit word for "He doesn't change."

He never cools off in His commitment to us. He never breaks a promise or loses enthusiasm. He stays near us when we are jealous for the truth, and He stays near us when we reject His counsel and deliberately disobey.

His faithfulness is unconditional, unending, and unswerving. Nothing we do can diminish it, and nothing we stop doing can increase it.

Mysterious though such incredible constancy may seem, it's true.

Excerpted from Charles R. Swindoll, Wisdom for the Way (Nashville: J. Countryman, a division of Thomas Nelson, Inc., 2001). Copyright © 2001 by Charles R. Swindoll, Inc. All rights reserved. Used by permission.