God, the Great Architect, also uses layers in His designs.
The "base layer" of God's plan is justice.
And the "layer 2" of His plan is mercy.
"The plan of mercy could not be brought about except an atonement should be made. Therefore, God Himself atones for the sins of the world, to bring about the plan of mercy, to appease the demands of justice, that God might be a perfect, just God, and a merciful God also." -Alma