30. And the Levites are to stand in the morning to give thanks, and to sing praises to the Lord: and in like manner in the evening,
31. As well in the oblation of the holocausts of the Lord, as in the sabbaths and in the new moons, and the rest of the solemnities, according to the number and ceremonies prescribed for every thing, continually before the Lord.
32. And let them keep the observances of the tabernacle of the covenant, and the ceremonies of the sanctuary, and the charge of the sons of Aaron their brethren, that they may minister in the house of the Lord.