And if thou wilt make me an altar of stone, thou shalt not build it of hewn stone: for if thou lift up thy tool upon it, thou hast polluted it.
I have seen all the things that are done under the sun; all of them are meaningless, a chasing after the wind.Ecclesiastes 1:14 NIV
Neither shalt thou go up by steps unto mine altar, that thy nakedness be not discovered thereon.Exodus 20:26 KJV
An altar of earth thou shalt make unto me, and shalt sacrifice thereon thy burnt offerings, and thy peace offerings, thy sheep, and thine oxen: in all places where I record my name I will come unto thee, and I will bless thee.Exodus 20:24 KJV