'Holiness' in the Bible

Give unto the LORD the glory due unto his name: bring an offering, and come before him: worship the LORD in the beauty of holiness.

"Instead, they are to assist by lending a hand to the descendants of Aaron regarding service to the Temple of the LORD relating to the courts, the chambers, purification of everything pertaining to holiness, and to anything else pertaining to service on behalf of the Temple of God, including assisting with the rows of showbread, selecting flour for the grain offerings, the unleavened bread, baked offerings, and oil-based offerings, no matter what the quantity or sizes.