(45) Kept the ward.--This should be read differently. The priests and Levites kept the ward of their God, and the ward of purification, and the singers and porters, &c. To "keep the ward" is to observe the regular times and seasons of sacrifice and thanksgiving.

Verse 45. - This verse is wrongly translated in the A. V. It should be rendered, as in the Vulgate and the Septuagint - "And they (i.e. the priests and Levites) maintained the ward of their God, and the ward of the purification, and the singers, and the porters (i.e. the institutions of singers and porters), according to the ordinance of David and of Solomon his son." Maintaining the ward of their God is serving regularly in the temple at the times appointed; maintaining the ward of the purification is observing the rules for the purifying of the holy things which had been laid down by David (1 Chronicles 23:28).

12:44-47 When the solemnities of a thanksgiving day leave such impressions on ministers and people, that both are more careful and cheerful in doing their duty, they are indeed acceptable to the Lord, and turn to good account. And whatever we do, must be purified by the blood of sprinkling, and by the grace of the Holy Spirit, or it cannot be acceptable to God.And both the singers and the porters kept the ward of their God, and the ward of their purification,.... The singers kept their turns in course in the temple, and were not wanting to officiate on all occasions, besides morning and evening services; and the porters they diligently kept the gates of the temple, that no impure person or thing in a ceremonial sense entered:

according to the commandment of David, and Solomon his son; who made very good rules and orders relative to the better and more regular performance of service by them; see 1 Chronicles 25:1.