We are all guilty in some way of redefining God to fit our image of Him. This is not a new phenomenon. Each generation will face this challenge as the spirit of the age attempts to form doctrines and theologies that lessen the majesty and unchangeable nature of God.
Between covenants what changed was not the nature of God, but how He redeems humanity. The Law was given to us with all its complicated rules and regulations to prepare us, even frustrate us with the complexity of its labor, making us ready to receive the pure and simple message of grace found in Jesus Christ. The Father who is the embodiment of love, truth, and justice, has not changed His nature in the transition between covenants. He remains the same always and forever.
The Lord can employ any means found in either the Old Testament or the New to alter the course of human history. A god we create in the image of our broken understanding is not the God of Heaven. This lesser god is created as the result of our fear, naivety, or rebellion. Many times, we confuse the consequence of sin as the judgment of God, when it is the by-product of unrepentance. Throughout human history, the Lord has always issued warnings wrapped in a promise. Only the God of Heaven can accomplish such a redemptive task.
Be careful about redefining God. Our creation will always fail us. The god of our creation will not be there when we need him most and will not have the power or authority to step into the events of human history and alter its course towards a righteous outcome.
“I am the Lord, and there is no other;
There is no God besides Me.
I will gird you, though you have not known Me,
That they may know from the rising of the sun to its setting
That there is none besides Me.
I am the Lord, and there is no other;
I form the light and create darkness,
I make peace and create calamity;
I, the Lord, do all these things” (Isaiah 45:5-7).