'Set Apart' in the Bible

Whatever touches its meat will become consecrated (ceremonially clean). When any of its blood splashes on a garment, you shall wash what was splashed on in a holy place.

You are therefore to make a distinction between the [ceremonially] clean animal and the unclean, and between the unclean bird and the clean; and you shall not make yourselves detestable by animal or by bird or by anything that crawls on the ground, which I have set apart from you as unclean.