God warned Israel, "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" (Ex. 20:25). To pollute something is to make it ordinary. God insists that any approach crafted by human ingenuity will produce a worship system just like all the pagan systems in the world. In other words, it will be common or profane - just like everyone else's paganism.