Then he appointed some of the Levites as ministers before the ark of the Lord, to invoke, to thank, and to praise the Lord, the God of Israel.

Then on that day David first appointed that thanksgiving be sung to the Lord by Asaph and his brothers.

David's Song of Thanks

Oh give thanks to the Lord; call upon his name; make known his deeds among the peoples!

Oh give thanks to the Lord, for he is good; for his steadfast love endures forever!

Say also: “Save us, O God of our salvation, and gather and deliver us from among the nations, that we may give thanks to your holy name and glory in your praise.

With them were Heman and Jeduthun and the rest of those chosen and expressly named to give thanks to the Lord, for his steadfast love endures forever.

And they were to stand every morning, thanking and praising the Lord, and likewise at evening,

Of Jeduthun, the sons of Jeduthun: Gedaliah, Zeri, Jeshaiah, Shimei, Hashabiah, and Mattithiah, six, under the direction of their father Jeduthun, who prophesied with the lyre in thanksgiving and praise to the Lord.

And now we thank you, our God, and praise your glorious name.