'Substitute' in the Bible

He must not replace or exchange it, good for bad or bad for good, and if he does indeed exchange one animal for another animal, then both the original animal and its substitute will be holy.

The owner must not examine the animals to distinguish between good and bad, and he must not exchange it. If, however, he does exchange it, both the original animal and its substitute will be holy. It must not be redeemed.'"

So he said to me, "All right then, I will substitute cow's manure instead of human excrement. You will cook your food over it."