'Set Apart' in the Bible

For now I have chosen and sanctified and set apart for My purpose this house that My Name may be here forever, and My eyes and My heart will be here perpetually.

They opposed King Uzziah and said to him, “It is not for you, Uzziah, to burn incense to the Lord, but for the priests, the sons of Aaron who have been consecrated to burn incense. Get out of the sanctuary, for you have been unfaithful and will have no honor from the Lord God.”