'Holy to the Lord' in the Bible

And Aaron shall make an atonement upon the horns of it once in a year, with the blood of the sin-offering of atonements: once in a year shall he make atonement upon it throughout your generations: it is most holy to the LORD.

Six days may work be done, but in the seventh is the sabbath of rest, holy to the LORD: whoever doeth any work in the sabbath-day, he shall surely be put to death.