Spiritual Law is more powerful than physical law (e.g. gravity). Christ came teaching us Spiritual Law.
Repentance includes changing our thinking from being carnally minded (focused on natural law) to being Spiritually minded (focused on Spiritual Law ).
The Spiritual Law of " Sowing and Reaping " works in the natural realm and it works in the Spiritual realm. So does the Law of Giving :
" Give and it shall be given to you, good measure, pressed down, shaken together and running over".